./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p07.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p07.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --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 64bit --witnessprinter.graph.data.programhash 6c7d381abf12d2f58f0705af3324587009ebcf1808c21f2ad8d6ad394be1acaf --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:13:06,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:13:06,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:13:06,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:13:06,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:13:06,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:13:06,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:13:06,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:13:06,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:13:06,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:13:06,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:13:06,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:13:06,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:13:06,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:13:06,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:13:06,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:13:06,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:13:06,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:13:06,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:13:06,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:13:06,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:13:06,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:13:06,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:13:06,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:13:06,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:13:06,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:13:07,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:13:07,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:13:07,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:13:07,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:13:07,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:13:07,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:13:07,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:13:07,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:13:07,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:13:07,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:13:07,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:13:07,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:13:07,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:13:07,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:13:07,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:13:07,016 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:13:07,069 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:13:07,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:13:07,070 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:13:07,070 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:13:07,072 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:13:07,073 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:13:07,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:13:07,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:13:07,074 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:13:07,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:13:07,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:13:07,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:13:07,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:13:07,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:13:07,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:13:07,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:13:07,076 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:13:07,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:13:07,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:13:07,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:13:07,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:13:07,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:13:07,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:13:07,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:13:07,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:13:07,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:13:07,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:13:07,078 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:13:07,078 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:13:07,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:13:07,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c7d381abf12d2f58f0705af3324587009ebcf1808c21f2ad8d6ad394be1acaf [2022-11-02 20:13:07,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:13:07,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:13:07,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:13:07,451 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:13:07,452 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:13:07,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p07.c [2022-11-02 20:13:07,536 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/data/b5a06977f/9fd2452c43b24f64af1125f04e6c3078/FLAG2131bfcb7 [2022-11-02 20:13:08,141 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:13:08,142 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p07.c [2022-11-02 20:13:08,171 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/data/b5a06977f/9fd2452c43b24f64af1125f04e6c3078/FLAG2131bfcb7 [2022-11-02 20:13:08,415 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/data/b5a06977f/9fd2452c43b24f64af1125f04e6c3078 [2022-11-02 20:13:08,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:13:08,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:13:08,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:13:08,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:13:08,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:13:08,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:13:08" (1/1) ... [2022-11-02 20:13:08,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75627c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:08, skipping insertion in model container [2022-11-02 20:13:08,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:13:08" (1/1) ... [2022-11-02 20:13:08,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:13:08,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:13:08,725 WARN L230 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_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p07.c[1107,1120] [2022-11-02 20:13:08,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:13:08,968 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:13:08,980 WARN L230 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_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p07.c[1107,1120] [2022-11-02 20:13:09,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:13:09,171 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:13:09,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:09 WrapperNode [2022-11-02 20:13:09,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:13:09,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:13:09,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:13:09,173 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:13:09,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:09" (1/1) ... [2022-11-02 20:13:09,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:09" (1/1) ... [2022-11-02 20:13:09,376 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1399 [2022-11-02 20:13:09,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:13:09,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:13:09,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:13:09,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:13:09,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:09" (1/1) ... [2022-11-02 20:13:09,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:09" (1/1) ... [2022-11-02 20:13:09,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:09" (1/1) ... [2022-11-02 20:13:09,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:09" (1/1) ... [2022-11-02 20:13:09,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:09" (1/1) ... [2022-11-02 20:13:09,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:09" (1/1) ... [2022-11-02 20:13:09,516 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:09" (1/1) ... [2022-11-02 20:13:09,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:09" (1/1) ... [2022-11-02 20:13:09,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:13:09,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:13:09,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:13:09,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:13:09,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:09" (1/1) ... [2022-11-02 20:13:09,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:13:09,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:13:09,620 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:13:09,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:13:09,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:13:09,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:13:10,057 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:13:10,059 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:13:11,943 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:13:11,953 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:13:11,954 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:13:11,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:13:11 BoogieIcfgContainer [2022-11-02 20:13:11,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:13:11,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:13:11,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:13:11,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:13:11,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:13:08" (1/3) ... [2022-11-02 20:13:11,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37220dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:13:11, skipping insertion in model container [2022-11-02 20:13:11,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:09" (2/3) ... [2022-11-02 20:13:11,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37220dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:13:11, skipping insertion in model container [2022-11-02 20:13:11,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:13:11" (3/3) ... [2022-11-02 20:13:11,969 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p07.c [2022-11-02 20:13:11,991 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:13:11,992 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:13:12,056 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:13:12,064 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@4c57d964, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:13:12,065 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:13:12,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 183 states have (on average 1.4972677595628416) internal successors, (274), 184 states have internal predecessors, (274), 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) [2022-11-02 20:13:12,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:13:12,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:12,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:13:12,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:12,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:12,114 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:13:12,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:12,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071575947] [2022-11-02 20:13:12,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:12,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:13:12,657 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:13:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:13:13,056 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:13:13,058 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:13:13,060 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:13:13,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:13:13,068 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:13:13,073 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:13:13,099 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 20:13:13,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:13:13 BoogieIcfgContainer [2022-11-02 20:13:13,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:13:13,112 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:13:13,112 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:13:13,112 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:13:13,113 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:13:11" (3/4) ... [2022-11-02 20:13:13,117 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:13:13,117 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:13:13,119 INFO L158 Benchmark]: Toolchain (without parser) took 4698.44ms. Allocated memory was 123.7MB in the beginning and 182.5MB in the end (delta: 58.7MB). Free memory was 79.5MB in the beginning and 120.8MB in the end (delta: -41.3MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2022-11-02 20:13:13,119 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 123.7MB. Free memory is still 97.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:13:13,120 INFO L158 Benchmark]: CACSL2BoogieTranslator took 749.84ms. Allocated memory is still 123.7MB. Free memory was 79.3MB in the beginning and 70.4MB in the end (delta: 8.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 20:13:13,121 INFO L158 Benchmark]: Boogie Procedure Inliner took 204.16ms. Allocated memory is still 123.7MB. Free memory was 70.4MB in the beginning and 53.3MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-02 20:13:13,122 INFO L158 Benchmark]: Boogie Preprocessor took 206.46ms. Allocated memory was 123.7MB in the beginning and 182.5MB in the end (delta: 58.7MB). Free memory was 53.3MB in the beginning and 146.2MB in the end (delta: -92.9MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. [2022-11-02 20:13:13,123 INFO L158 Benchmark]: RCFGBuilder took 2372.40ms. Allocated memory is still 182.5MB. Free memory was 146.2MB in the beginning and 113.1MB in the end (delta: 33.0MB). Peak memory consumption was 75.9MB. Max. memory is 16.1GB. [2022-11-02 20:13:13,123 INFO L158 Benchmark]: TraceAbstraction took 1151.79ms. Allocated memory is still 182.5MB. Free memory was 112.1MB in the beginning and 120.8MB in the end (delta: -8.7MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2022-11-02 20:13:13,124 INFO L158 Benchmark]: Witness Printer took 5.48ms. Allocated memory is still 182.5MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:13:13,127 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 123.7MB. Free memory is still 97.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 749.84ms. Allocated memory is still 123.7MB. Free memory was 79.3MB in the beginning and 70.4MB in the end (delta: 8.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 204.16ms. Allocated memory is still 123.7MB. Free memory was 70.4MB in the beginning and 53.3MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 206.46ms. Allocated memory was 123.7MB in the beginning and 182.5MB in the end (delta: 58.7MB). Free memory was 53.3MB in the beginning and 146.2MB in the end (delta: -92.9MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. * RCFGBuilder took 2372.40ms. Allocated memory is still 182.5MB. Free memory was 146.2MB in the beginning and 113.1MB in the end (delta: 33.0MB). Peak memory consumption was 75.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1151.79ms. Allocated memory is still 182.5MB. Free memory was 112.1MB in the beginning and 120.8MB in the end (delta: -8.7MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * Witness Printer took 5.48ms. Allocated memory is still 182.5MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 173, overapproximation of bitwiseOr at line 183, overapproximation of bitwiseAnd at line 147. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 5); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (5 - 1); [L31] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 12); [L32] const SORT_5 msb_SORT_5 = (SORT_5)1 << (12 - 1); [L34] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 3); [L35] const SORT_10 msb_SORT_10 = (SORT_10)1 << (3 - 1); [L37] const SORT_18 mask_SORT_18 = (SORT_18)-1 >> (sizeof(SORT_18) * 8 - 2); [L38] const SORT_18 msb_SORT_18 = (SORT_18)1 << (2 - 1); [L40] const SORT_84 mask_SORT_84 = (SORT_84)-1 >> (sizeof(SORT_84) * 8 - 4); [L41] const SORT_84 msb_SORT_84 = (SORT_84)1 << (4 - 1); [L43] const SORT_148 mask_SORT_148 = (SORT_148)-1 >> (sizeof(SORT_148) * 8 - 32); [L44] const SORT_148 msb_SORT_148 = (SORT_148)1 << (32 - 1); [L46] const SORT_5 var_7 = 0; [L47] const SORT_10 var_12 = 3; [L48] const SORT_10 var_15 = 4; [L49] const SORT_10 var_24 = 0; [L50] const SORT_3 var_29 = 0; [L51] const SORT_1 var_37 = 1; [L52] const SORT_1 var_45 = 0; [L53] const SORT_10 var_62 = 2; [L54] const SORT_10 var_66 = 1; [L55] const SORT_10 var_72 = 5; [L56] const SORT_10 var_100 = 7; [L57] const SORT_10 var_105 = 6; [L58] const SORT_148 var_150 = 0; [L59] const SORT_3 var_165 = 2; [L60] const SORT_3 var_187 = 31; [L62] SORT_1 input_2; [L63] SORT_3 input_4; [L64] SORT_5 input_6; [L65] SORT_3 input_176; [L66] SORT_3 input_177; [L67] SORT_3 input_178; [L68] SORT_3 input_186; [L69] SORT_3 input_195; [L70] SORT_3 input_196; [L71] SORT_3 input_197; [L72] SORT_3 input_200; [L73] SORT_3 input_219; [L74] SORT_3 input_220; [L75] SORT_3 input_221; [L76] SORT_3 input_224; [L77] SORT_3 input_226; [L78] SORT_18 input_240; [L79] SORT_18 input_241; [L80] SORT_18 input_242; [L82] SORT_5 state_8 = __VERIFIER_nondet_ushort() & mask_SORT_5; [L83] SORT_10 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L84] SORT_3 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L85] SORT_3 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L86] SORT_3 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L87] SORT_1 state_46 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_3 state_48 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L89] SORT_3 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L90] SORT_3 state_52 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L91] SORT_3 state_54 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L92] SORT_3 state_56 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L93] SORT_3 state_58 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L94] SORT_3 state_60 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L96] SORT_5 init_9_arg_1 = var_7; [L97] state_8 = init_9_arg_1 [L98] SORT_10 init_26_arg_1 = var_24; [L99] state_25 = init_26_arg_1 [L100] SORT_3 init_31_arg_1 = var_29; [L101] state_30 = init_31_arg_1 [L102] SORT_3 init_42_arg_1 = var_29; [L103] state_41 = init_42_arg_1 [L104] SORT_3 init_44_arg_1 = var_29; [L105] state_43 = init_44_arg_1 [L106] SORT_1 init_47_arg_1 = var_45; [L107] state_46 = init_47_arg_1 [L108] SORT_3 init_49_arg_1 = var_29; [L109] state_48 = init_49_arg_1 [L110] SORT_3 init_51_arg_1 = var_29; [L111] state_50 = init_51_arg_1 [L112] SORT_3 init_53_arg_1 = var_29; [L113] state_52 = init_53_arg_1 [L114] SORT_3 init_55_arg_1 = var_29; [L115] state_54 = init_55_arg_1 [L116] SORT_3 init_57_arg_1 = var_29; [L117] state_56 = init_57_arg_1 [L118] SORT_3 init_59_arg_1 = var_29; [L119] state_58 = init_59_arg_1 [L120] SORT_3 init_61_arg_1 = var_29; [L121] state_60 = init_61_arg_1 VAL [init_26_arg_1=0, init_31_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_47_arg_1=0, init_49_arg_1=0, init_51_arg_1=0, init_53_arg_1=0, init_55_arg_1=0, init_57_arg_1=0, init_59_arg_1=0, init_61_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_10=7, mask_SORT_148=4294967295, mask_SORT_18=3, mask_SORT_3=31, mask_SORT_5=4095, mask_SORT_84=15, msb_SORT_1=1, msb_SORT_10=4, msb_SORT_148=2147483648, msb_SORT_18=2, msb_SORT_3=16, msb_SORT_5=2048, msb_SORT_84=8, state_25=0, state_30=0, state_41=0, state_43=0, state_46=0, state_48=0, state_50=0, state_52=0, state_54=0, state_56=0, state_58=0, state_60=0, state_8=0, var_100=7, var_105=6, var_12=3, var_15=4, var_150=0, var_165=2, var_187=31, var_24=0, var_29=0, var_37=1, var_45=0, var_62=2, var_66=1, var_7=0, var_72=5] [L124] input_2 = __VERIFIER_nondet_uchar() [L125] input_4 = __VERIFIER_nondet_uchar() [L126] input_6 = __VERIFIER_nondet_ushort() [L127] input_176 = __VERIFIER_nondet_uchar() [L128] input_177 = __VERIFIER_nondet_uchar() [L129] input_178 = __VERIFIER_nondet_uchar() [L130] input_186 = __VERIFIER_nondet_uchar() [L131] input_195 = __VERIFIER_nondet_uchar() [L132] input_196 = __VERIFIER_nondet_uchar() [L133] input_197 = __VERIFIER_nondet_uchar() [L134] input_200 = __VERIFIER_nondet_uchar() [L135] input_219 = __VERIFIER_nondet_uchar() [L136] input_220 = __VERIFIER_nondet_uchar() [L137] input_221 = __VERIFIER_nondet_uchar() [L138] input_224 = __VERIFIER_nondet_uchar() [L139] input_226 = __VERIFIER_nondet_uchar() [L140] input_240 = __VERIFIER_nondet_uchar() [L141] input_241 = __VERIFIER_nondet_uchar() [L142] input_242 = __VERIFIER_nondet_uchar() [L145] SORT_5 var_11_arg_0 = state_8; [L146] SORT_10 var_11 = var_11_arg_0 >> 9; [L147] var_11 = var_11 & mask_SORT_10 [L148] SORT_10 var_13_arg_0 = var_11; [L149] SORT_10 var_13_arg_1 = var_12; [L150] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L151] SORT_5 var_14_arg_0 = state_8; [L152] SORT_10 var_14 = var_14_arg_0 >> 0; [L153] var_14 = var_14 & mask_SORT_10 [L154] SORT_10 var_16_arg_0 = var_14; [L155] SORT_10 var_16_arg_1 = var_15; [L156] SORT_1 var_16 = var_16_arg_0 == var_16_arg_1; [L157] SORT_1 var_17_arg_0 = var_13; [L158] SORT_1 var_17_arg_1 = var_16; [L159] SORT_1 var_17 = var_17_arg_0 & var_17_arg_1; [L160] SORT_5 var_19_arg_0 = state_8; [L161] SORT_18 var_19 = var_19_arg_0 >> 7; [L162] var_19 = var_19 & mask_SORT_18 [L163] SORT_5 var_20_arg_0 = state_8; [L164] SORT_18 var_20 = var_20_arg_0 >> 5; [L165] var_20 = var_20 & mask_SORT_18 [L166] SORT_18 var_21_arg_0 = var_19; [L167] SORT_18 var_21_arg_1 = var_20; [L168] SORT_1 var_21 = var_21_arg_0 == var_21_arg_1; [L169] SORT_1 var_22_arg_0 = var_17; [L170] SORT_1 var_22_arg_1 = var_21; [L171] SORT_1 var_22 = var_22_arg_0 & var_22_arg_1; [L172] SORT_1 var_23_arg_0 = var_22; [L173] SORT_1 var_23 = ~var_23_arg_0; [L174] SORT_10 var_27_arg_0 = state_25; [L175] SORT_1 var_27 = var_27_arg_0 >> 2; [L176] SORT_1 var_28_arg_0 = var_27; [L177] SORT_1 var_28 = ~var_28_arg_0; [L178] SORT_3 var_32_arg_0 = state_30; [L179] SORT_3 var_32_arg_1 = var_29; [L180] SORT_1 var_32 = var_32_arg_0 == var_32_arg_1; [L181] SORT_1 var_33_arg_0 = var_28; [L182] SORT_1 var_33_arg_1 = var_32; [L183] SORT_1 var_33 = var_33_arg_0 | var_33_arg_1; [L184] SORT_1 var_34_arg_0 = var_23; [L185] SORT_1 var_34_arg_1 = var_33; [L186] SORT_1 var_34 = var_34_arg_0 | var_34_arg_1; [L187] SORT_1 var_38_arg_0 = var_34; [L188] SORT_1 var_38 = ~var_38_arg_0; [L189] SORT_1 var_39_arg_0 = var_37; [L190] SORT_1 var_39_arg_1 = var_38; [L191] SORT_1 var_39 = var_39_arg_0 & var_39_arg_1; [L192] var_39 = var_39 & mask_SORT_1 [L193] SORT_1 bad_40_arg_0 = var_39; [L194] CALL __VERIFIER_assert(!(bad_40_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 185 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=185occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 20:13:13,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p07.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --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 64bit --witnessprinter.graph.data.programhash 6c7d381abf12d2f58f0705af3324587009ebcf1808c21f2ad8d6ad394be1acaf --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:13:15,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:13:15,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:13:15,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:13:15,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:13:15,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:13:15,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:13:15,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:13:15,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:13:15,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:13:15,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:13:15,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:13:15,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:13:15,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:13:15,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:13:15,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:13:15,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:13:15,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:13:15,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:13:15,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:13:15,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:13:15,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:13:15,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:13:15,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:13:15,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:13:15,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:13:15,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:13:15,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:13:15,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:13:15,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:13:15,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:13:15,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:13:15,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:13:15,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:13:15,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:13:15,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:13:15,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:13:15,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:13:15,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:13:15,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:13:15,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:13:15,884 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:13:15,911 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:13:15,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:13:15,912 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:13:15,912 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:13:15,913 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:13:15,913 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:13:15,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:13:15,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:13:15,915 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:13:15,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:13:15,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:13:15,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:13:15,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:13:15,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:13:15,916 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:13:15,916 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:13:15,917 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:13:15,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:13:15,917 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:13:15,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:13:15,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:13:15,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:13:15,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:13:15,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:13:15,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:13:15,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:13:15,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:13:15,920 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:13:15,920 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:13:15,920 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:13:15,920 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:13:15,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:13:15,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:13:15,921 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c7d381abf12d2f58f0705af3324587009ebcf1808c21f2ad8d6ad394be1acaf [2022-11-02 20:13:16,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:13:16,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:13:16,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:13:16,358 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:13:16,361 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:13:16,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p07.c [2022-11-02 20:13:16,463 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/data/6c8a7c54a/b39740bb42c443328d231d62b99e4f53/FLAG7f814a471 [2022-11-02 20:13:17,248 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:13:17,249 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p07.c [2022-11-02 20:13:17,272 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/data/6c8a7c54a/b39740bb42c443328d231d62b99e4f53/FLAG7f814a471 [2022-11-02 20:13:17,520 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/data/6c8a7c54a/b39740bb42c443328d231d62b99e4f53 [2022-11-02 20:13:17,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:13:17,525 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:13:17,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:13:17,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:13:17,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:13:17,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:13:17" (1/1) ... [2022-11-02 20:13:17,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61a8412b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:17, skipping insertion in model container [2022-11-02 20:13:17,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:13:17" (1/1) ... [2022-11-02 20:13:17,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:13:17,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:13:17,770 WARN L230 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_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p07.c[1107,1120] [2022-11-02 20:13:18,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:13:18,103 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:13:18,123 WARN L230 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_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p07.c[1107,1120] [2022-11-02 20:13:18,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:13:18,290 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:13:18,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:18 WrapperNode [2022-11-02 20:13:18,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:13:18,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:13:18,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:13:18,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:13:18,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:18" (1/1) ... [2022-11-02 20:13:18,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:18" (1/1) ... [2022-11-02 20:13:18,438 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1399 [2022-11-02 20:13:18,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:13:18,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:13:18,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:13:18,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:13:18,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:18" (1/1) ... [2022-11-02 20:13:18,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:18" (1/1) ... [2022-11-02 20:13:18,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:18" (1/1) ... [2022-11-02 20:13:18,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:18" (1/1) ... [2022-11-02 20:13:18,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:18" (1/1) ... [2022-11-02 20:13:18,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:18" (1/1) ... [2022-11-02 20:13:18,508 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:18" (1/1) ... [2022-11-02 20:13:18,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:18" (1/1) ... [2022-11-02 20:13:18,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:13:18,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:13:18,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:13:18,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:13:18,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:18" (1/1) ... [2022-11-02 20:13:18,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:13:18,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:13:18,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:13:18,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:13:18,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:13:18,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:13:19,116 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:13:19,119 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:13:20,526 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:13:20,545 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:13:20,545 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:13:20,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:13:20 BoogieIcfgContainer [2022-11-02 20:13:20,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:13:20,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:13:20,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:13:20,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:13:20,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:13:17" (1/3) ... [2022-11-02 20:13:20,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2076e406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:13:20, skipping insertion in model container [2022-11-02 20:13:20,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:18" (2/3) ... [2022-11-02 20:13:20,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2076e406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:13:20, skipping insertion in model container [2022-11-02 20:13:20,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:13:20" (3/3) ... [2022-11-02 20:13:20,561 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p07.c [2022-11-02 20:13:20,587 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:13:20,587 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:13:20,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:13:20,712 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@22964b8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:13:20,712 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:13:20,719 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 183 states have (on average 1.4972677595628416) internal successors, (274), 184 states have internal predecessors, (274), 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) [2022-11-02 20:13:20,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:13:20,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:20,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:13:20,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:20,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:20,738 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:13:20,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:20,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140987394] [2022-11-02 20:13:20,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:20,756 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:20,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:20,762 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:20,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:13:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:21,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:13:21,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:21,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:21,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:21,331 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:21,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140987394] [2022-11-02 20:13:21,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140987394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:21,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:21,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:13:21,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631828921] [2022-11-02 20:13:21,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:21,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:13:21,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:21,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:13:21,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:13:21,392 INFO L87 Difference]: Start difference. First operand has 185 states, 183 states have (on average 1.4972677595628416) internal successors, (274), 184 states have internal predecessors, (274), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:21,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:21,778 INFO L93 Difference]: Finished difference Result 542 states and 813 transitions. [2022-11-02 20:13:21,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:13:21,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:13:21,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:21,794 INFO L225 Difference]: With dead ends: 542 [2022-11-02 20:13:21,795 INFO L226 Difference]: Without dead ends: 359 [2022-11-02 20:13:21,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:21,803 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 525 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:21,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 724 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:13:21,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-02 20:13:21,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 183. [2022-11-02 20:13:21,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.4835164835164836) internal successors, (270), 182 states have internal predecessors, (270), 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) [2022-11-02 20:13:21,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 270 transitions. [2022-11-02 20:13:21,863 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 270 transitions. Word has length 5 [2022-11-02 20:13:21,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:21,864 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 270 transitions. [2022-11-02 20:13:21,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:21,864 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 270 transitions. [2022-11-02 20:13:21,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:21,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:21,874 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:21,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:22,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:22,083 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:22,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:22,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1686520099, now seen corresponding path program 1 times [2022-11-02 20:13:22,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:22,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741269742] [2022-11-02 20:13:22,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:22,089 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:22,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:22,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:22,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:13:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:22,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:13:22,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:23,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:23,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:23,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:23,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741269742] [2022-11-02 20:13:23,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741269742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:23,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:23,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:23,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004362116] [2022-11-02 20:13:23,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:23,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:13:23,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:23,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:13:23,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:23,046 INFO L87 Difference]: Start difference. First operand 183 states and 270 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:23,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:23,222 INFO L93 Difference]: Finished difference Result 716 states and 1063 transitions. [2022-11-02 20:13:23,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:13:23,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:23,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:23,226 INFO L225 Difference]: With dead ends: 716 [2022-11-02 20:13:23,226 INFO L226 Difference]: Without dead ends: 537 [2022-11-02 20:13:23,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:13:23,229 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 1037 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:23,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 1556 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:13:23,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-02 20:13:23,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 189. [2022-11-02 20:13:23,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.4787234042553192) internal successors, (278), 188 states have internal predecessors, (278), 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) [2022-11-02 20:13:23,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 278 transitions. [2022-11-02 20:13:23,249 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 278 transitions. Word has length 182 [2022-11-02 20:13:23,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:23,249 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 278 transitions. [2022-11-02 20:13:23,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:23,250 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 278 transitions. [2022-11-02 20:13:23,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:23,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:23,254 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:23,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:23,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:23,475 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:23,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:23,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1159126049, now seen corresponding path program 1 times [2022-11-02 20:13:23,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:23,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716505380] [2022-11-02 20:13:23,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:23,479 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:23,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:23,483 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:23,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:13:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:24,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:13:24,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:24,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:24,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:24,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:24,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716505380] [2022-11-02 20:13:24,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716505380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:24,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:24,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:13:24,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101562986] [2022-11-02 20:13:24,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:24,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:13:24,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:24,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:13:24,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:13:24,351 INFO L87 Difference]: Start difference. First operand 189 states and 278 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:13:24,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:24,557 INFO L93 Difference]: Finished difference Result 724 states and 1072 transitions. [2022-11-02 20:13:24,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:13:24,559 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:24,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:24,561 INFO L225 Difference]: With dead ends: 724 [2022-11-02 20:13:24,562 INFO L226 Difference]: Without dead ends: 545 [2022-11-02 20:13:24,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:13:24,564 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 1304 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1304 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:24,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1304 Valid, 2073 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:13:24,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-11-02 20:13:24,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 191. [2022-11-02 20:13:24,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.4736842105263157) internal successors, (280), 190 states have internal predecessors, (280), 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) [2022-11-02 20:13:24,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 280 transitions. [2022-11-02 20:13:24,578 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 280 transitions. Word has length 182 [2022-11-02 20:13:24,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:24,578 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 280 transitions. [2022-11-02 20:13:24,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:13:24,579 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 280 transitions. [2022-11-02 20:13:24,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:24,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:24,586 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:24,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:24,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:24,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:24,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:24,800 INFO L85 PathProgramCache]: Analyzing trace with hash -510533279, now seen corresponding path program 1 times [2022-11-02 20:13:24,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:24,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198639474] [2022-11-02 20:13:24,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:24,802 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:24,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:24,804 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:24,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:13:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:25,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:13:25,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:25,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:25,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:25,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:25,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198639474] [2022-11-02 20:13:25,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198639474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:25,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:25,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:13:25,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000332633] [2022-11-02 20:13:25,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:25,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:13:25,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:25,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:13:25,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:13:25,588 INFO L87 Difference]: Start difference. First operand 191 states and 280 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:13:25,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:25,790 INFO L93 Difference]: Finished difference Result 724 states and 1071 transitions. [2022-11-02 20:13:25,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:13:25,791 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:25,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:25,793 INFO L225 Difference]: With dead ends: 724 [2022-11-02 20:13:25,793 INFO L226 Difference]: Without dead ends: 545 [2022-11-02 20:13:25,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:13:25,795 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1296 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1296 SdHoareTripleChecker+Valid, 2061 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:25,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1296 Valid, 2061 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:13:25,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-11-02 20:13:25,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 193. [2022-11-02 20:13:25,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.46875) internal successors, (282), 192 states have internal predecessors, (282), 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) [2022-11-02 20:13:25,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 282 transitions. [2022-11-02 20:13:25,806 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 282 transitions. Word has length 182 [2022-11-02 20:13:25,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:25,806 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 282 transitions. [2022-11-02 20:13:25,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:13:25,807 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 282 transitions. [2022-11-02 20:13:25,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:25,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:25,810 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:25,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:26,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:26,029 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:26,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:26,030 INFO L85 PathProgramCache]: Analyzing trace with hash -420472989, now seen corresponding path program 1 times [2022-11-02 20:13:26,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:26,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101898576] [2022-11-02 20:13:26,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:26,032 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:26,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:26,033 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:26,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:13:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:26,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:13:26,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:26,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:26,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:26,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:26,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101898576] [2022-11-02 20:13:26,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101898576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:26,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:26,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:13:26,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608680434] [2022-11-02 20:13:26,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:26,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:13:26,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:26,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:13:26,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:13:26,799 INFO L87 Difference]: Start difference. First operand 193 states and 282 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:13:27,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:27,101 INFO L93 Difference]: Finished difference Result 724 states and 1070 transitions. [2022-11-02 20:13:27,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:13:27,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:27,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:27,105 INFO L225 Difference]: With dead ends: 724 [2022-11-02 20:13:27,105 INFO L226 Difference]: Without dead ends: 545 [2022-11-02 20:13:27,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:13:27,107 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 1286 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:27,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1286 Valid, 2016 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:13:27,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-11-02 20:13:27,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 195. [2022-11-02 20:13:27,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.4639175257731958) internal successors, (284), 194 states have internal predecessors, (284), 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) [2022-11-02 20:13:27,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 284 transitions. [2022-11-02 20:13:27,117 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 284 transitions. Word has length 182 [2022-11-02 20:13:27,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:27,117 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 284 transitions. [2022-11-02 20:13:27,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:13:27,118 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 284 transitions. [2022-11-02 20:13:27,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:27,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:27,120 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:27,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:27,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:27,343 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:27,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:27,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1828198939, now seen corresponding path program 1 times [2022-11-02 20:13:27,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:27,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188410181] [2022-11-02 20:13:27,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:27,345 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:27,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:27,346 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:27,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:13:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:27,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:13:27,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:28,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:28,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:28,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188410181] [2022-11-02 20:13:28,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [188410181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:28,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:28,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:13:28,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338434628] [2022-11-02 20:13:28,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:28,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:13:28,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:28,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:13:28,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:13:28,056 INFO L87 Difference]: Start difference. First operand 195 states and 284 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:13:28,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:28,269 INFO L93 Difference]: Finished difference Result 724 states and 1069 transitions. [2022-11-02 20:13:28,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:13:28,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:28,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:28,273 INFO L225 Difference]: With dead ends: 724 [2022-11-02 20:13:28,273 INFO L226 Difference]: Without dead ends: 545 [2022-11-02 20:13:28,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:13:28,275 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 1278 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 2041 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:28,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1278 Valid, 2041 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:13:28,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-11-02 20:13:28,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 197. [2022-11-02 20:13:28,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.4591836734693877) internal successors, (286), 196 states have internal predecessors, (286), 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) [2022-11-02 20:13:28,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 286 transitions. [2022-11-02 20:13:28,284 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 286 transitions. Word has length 182 [2022-11-02 20:13:28,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:28,284 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 286 transitions. [2022-11-02 20:13:28,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:13:28,284 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 286 transitions. [2022-11-02 20:13:28,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:28,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:28,287 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:28,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:28,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:28,505 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:28,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:28,506 INFO L85 PathProgramCache]: Analyzing trace with hash 543517927, now seen corresponding path program 1 times [2022-11-02 20:13:28,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:28,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729104558] [2022-11-02 20:13:28,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:28,507 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:28,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:28,508 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:28,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:13:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:29,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:13:29,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:29,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:29,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:29,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:29,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729104558] [2022-11-02 20:13:29,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729104558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:29,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:29,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:13:29,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455989097] [2022-11-02 20:13:29,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:29,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:13:29,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:29,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:13:29,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:13:29,178 INFO L87 Difference]: Start difference. First operand 197 states and 286 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:13:29,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:29,358 INFO L93 Difference]: Finished difference Result 724 states and 1068 transitions. [2022-11-02 20:13:29,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:13:29,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:29,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:29,362 INFO L225 Difference]: With dead ends: 724 [2022-11-02 20:13:29,362 INFO L226 Difference]: Without dead ends: 545 [2022-11-02 20:13:29,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:13:29,364 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 1272 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:29,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 2038 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:13:29,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-11-02 20:13:29,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 199. [2022-11-02 20:13:29,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.4545454545454546) internal successors, (288), 198 states have internal predecessors, (288), 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) [2022-11-02 20:13:29,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 288 transitions. [2022-11-02 20:13:29,372 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 288 transitions. Word has length 182 [2022-11-02 20:13:29,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:29,372 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 288 transitions. [2022-11-02 20:13:29,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:13:29,373 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 288 transitions. [2022-11-02 20:13:29,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:29,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:29,375 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:29,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:29,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:29,591 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:29,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:29,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1042074729, now seen corresponding path program 1 times [2022-11-02 20:13:29,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:29,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461331604] [2022-11-02 20:13:29,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:29,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:29,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:29,594 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:29,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:13:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:30,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:13:30,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:30,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:30,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:30,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:30,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461331604] [2022-11-02 20:13:30,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461331604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:30,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:30,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:30,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769731300] [2022-11-02 20:13:30,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:30,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:13:30,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:30,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:13:30,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:30,319 INFO L87 Difference]: Start difference. First operand 199 states and 288 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:30,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:30,484 INFO L93 Difference]: Finished difference Result 716 states and 1057 transitions. [2022-11-02 20:13:30,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:13:30,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:30,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:30,488 INFO L225 Difference]: With dead ends: 716 [2022-11-02 20:13:30,488 INFO L226 Difference]: Without dead ends: 537 [2022-11-02 20:13:30,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:13:30,490 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 985 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:30,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 1514 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:13:30,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-02 20:13:30,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 205. [2022-11-02 20:13:30,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.4509803921568627) internal successors, (296), 204 states have internal predecessors, (296), 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) [2022-11-02 20:13:30,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 296 transitions. [2022-11-02 20:13:30,499 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 296 transitions. Word has length 182 [2022-11-02 20:13:30,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:30,500 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 296 transitions. [2022-11-02 20:13:30,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:30,500 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 296 transitions. [2022-11-02 20:13:30,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:30,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:30,503 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:30,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:30,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:30,726 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:30,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:30,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1386902891, now seen corresponding path program 1 times [2022-11-02 20:13:30,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:30,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259588436] [2022-11-02 20:13:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:30,728 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:30,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:30,730 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:30,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:13:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:31,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:13:31,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:31,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:31,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:31,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:31,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259588436] [2022-11-02 20:13:31,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259588436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:31,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:31,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:13:31,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614843973] [2022-11-02 20:13:31,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:31,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:13:31,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:31,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:13:31,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:13:31,397 INFO L87 Difference]: Start difference. First operand 205 states and 296 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:13:31,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:31,645 INFO L93 Difference]: Finished difference Result 740 states and 1090 transitions. [2022-11-02 20:13:31,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:13:31,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:31,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:31,649 INFO L225 Difference]: With dead ends: 740 [2022-11-02 20:13:31,649 INFO L226 Difference]: Without dead ends: 561 [2022-11-02 20:13:31,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:13:31,650 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1274 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:31,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1274 Valid, 1995 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:13:31,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-02 20:13:31,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 207. [2022-11-02 20:13:31,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4466019417475728) internal successors, (298), 206 states have internal predecessors, (298), 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) [2022-11-02 20:13:31,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 298 transitions. [2022-11-02 20:13:31,659 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 298 transitions. Word has length 182 [2022-11-02 20:13:31,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:31,659 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 298 transitions. [2022-11-02 20:13:31,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:13:31,665 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 298 transitions. [2022-11-02 20:13:31,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:31,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:31,668 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:31,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:31,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:31,883 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:31,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:31,883 INFO L85 PathProgramCache]: Analyzing trace with hash -382568723, now seen corresponding path program 1 times [2022-11-02 20:13:31,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:31,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967710047] [2022-11-02 20:13:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:31,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:31,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:31,886 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:31,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:13:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:32,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:13:32,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:32,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:32,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:32,550 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:32,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967710047] [2022-11-02 20:13:32,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967710047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:32,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:32,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:32,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080252378] [2022-11-02 20:13:32,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:32,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:13:32,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:32,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:13:32,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:32,553 INFO L87 Difference]: Start difference. First operand 207 states and 298 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:32,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:32,710 INFO L93 Difference]: Finished difference Result 716 states and 1055 transitions. [2022-11-02 20:13:32,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:13:32,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:32,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:32,715 INFO L225 Difference]: With dead ends: 716 [2022-11-02 20:13:32,715 INFO L226 Difference]: Without dead ends: 537 [2022-11-02 20:13:32,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:13:32,717 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 971 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:32,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 1503 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:13:32,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-02 20:13:32,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 209. [2022-11-02 20:13:32,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.4423076923076923) internal successors, (300), 208 states have internal predecessors, (300), 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) [2022-11-02 20:13:32,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 300 transitions. [2022-11-02 20:13:32,732 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 300 transitions. Word has length 182 [2022-11-02 20:13:32,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:32,732 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 300 transitions. [2022-11-02 20:13:32,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:32,733 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 300 transitions. [2022-11-02 20:13:32,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:32,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:32,735 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:32,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:32,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:32,953 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:32,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:32,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1787760401, now seen corresponding path program 1 times [2022-11-02 20:13:32,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:32,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407868409] [2022-11-02 20:13:32,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:32,955 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:32,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:32,956 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:32,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:13:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:33,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:13:33,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:33,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:33,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:33,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:33,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407868409] [2022-11-02 20:13:33,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407868409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:33,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:33,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:13:33,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104658136] [2022-11-02 20:13:33,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:33,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:13:33,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:33,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:13:33,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:13:33,880 INFO L87 Difference]: Start difference. First operand 209 states and 300 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:13:34,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:34,394 INFO L93 Difference]: Finished difference Result 740 states and 1088 transitions. [2022-11-02 20:13:34,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:13:34,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:34,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:34,397 INFO L225 Difference]: With dead ends: 740 [2022-11-02 20:13:34,397 INFO L226 Difference]: Without dead ends: 561 [2022-11-02 20:13:34,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:13:34,398 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 1255 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:34,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 1863 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:13:34,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-02 20:13:34,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 211. [2022-11-02 20:13:34,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.438095238095238) internal successors, (302), 210 states have internal predecessors, (302), 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) [2022-11-02 20:13:34,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 302 transitions. [2022-11-02 20:13:34,407 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 302 transitions. Word has length 182 [2022-11-02 20:13:34,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:34,407 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 302 transitions. [2022-11-02 20:13:34,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:13:34,408 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 302 transitions. [2022-11-02 20:13:34,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:34,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:34,410 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:34,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:34,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:34,634 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:34,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:34,635 INFO L85 PathProgramCache]: Analyzing trace with hash -341179535, now seen corresponding path program 1 times [2022-11-02 20:13:34,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:34,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271980322] [2022-11-02 20:13:34,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:34,636 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:34,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:34,637 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:34,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:13:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:35,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:13:35,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:35,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:35,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:35,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:35,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271980322] [2022-11-02 20:13:35,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271980322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:35,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:35,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:35,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756471723] [2022-11-02 20:13:35,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:35,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:13:35,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:35,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:13:35,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:35,246 INFO L87 Difference]: Start difference. First operand 211 states and 302 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:35,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:35,429 INFO L93 Difference]: Finished difference Result 716 states and 1053 transitions. [2022-11-02 20:13:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:13:35,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:35,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:35,432 INFO L225 Difference]: With dead ends: 716 [2022-11-02 20:13:35,433 INFO L226 Difference]: Without dead ends: 537 [2022-11-02 20:13:35,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:13:35,434 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 957 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:35,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 1478 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:13:35,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-02 20:13:35,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 213. [2022-11-02 20:13:35,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.4339622641509433) internal successors, (304), 212 states have internal predecessors, (304), 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) [2022-11-02 20:13:35,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 304 transitions. [2022-11-02 20:13:35,442 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 304 transitions. Word has length 182 [2022-11-02 20:13:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:35,443 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 304 transitions. [2022-11-02 20:13:35,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:35,444 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 304 transitions. [2022-11-02 20:13:35,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:35,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:35,446 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:35,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:35,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:35,665 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:35,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:35,665 INFO L85 PathProgramCache]: Analyzing trace with hash 44682867, now seen corresponding path program 1 times [2022-11-02 20:13:35,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:35,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531514192] [2022-11-02 20:13:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:35,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:35,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:35,668 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:35,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:13:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:36,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:13:36,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:36,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:36,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:36,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531514192] [2022-11-02 20:13:36,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531514192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:36,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:36,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:36,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631679785] [2022-11-02 20:13:36,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:36,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:13:36,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:36,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:13:36,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:36,321 INFO L87 Difference]: Start difference. First operand 213 states and 304 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:36,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:36,528 INFO L93 Difference]: Finished difference Result 724 states and 1062 transitions. [2022-11-02 20:13:36,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:13:36,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:36,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:36,531 INFO L225 Difference]: With dead ends: 724 [2022-11-02 20:13:36,531 INFO L226 Difference]: Without dead ends: 545 [2022-11-02 20:13:36,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:13:36,532 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 957 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:36,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 1475 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:13:36,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-11-02 20:13:36,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 217. [2022-11-02 20:13:36,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.4305555555555556) internal successors, (309), 216 states have internal predecessors, (309), 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) [2022-11-02 20:13:36,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 309 transitions. [2022-11-02 20:13:36,540 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 309 transitions. Word has length 182 [2022-11-02 20:13:36,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:36,540 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 309 transitions. [2022-11-02 20:13:36,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:36,541 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 309 transitions. [2022-11-02 20:13:36,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:36,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:36,542 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:36,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:36,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:36,759 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:36,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:36,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1941662325, now seen corresponding path program 1 times [2022-11-02 20:13:36,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:36,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902147521] [2022-11-02 20:13:36,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:36,761 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:36,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:36,762 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:36,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:13:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:37,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:13:37,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:37,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:37,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:37,504 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:37,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902147521] [2022-11-02 20:13:37,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902147521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:37,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:37,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:37,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149579320] [2022-11-02 20:13:37,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:37,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:13:37,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:37,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:13:37,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:37,507 INFO L87 Difference]: Start difference. First operand 217 states and 309 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:37,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:37,821 INFO L93 Difference]: Finished difference Result 754 states and 1106 transitions. [2022-11-02 20:13:37,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:13:37,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:37,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:37,824 INFO L225 Difference]: With dead ends: 754 [2022-11-02 20:13:37,824 INFO L226 Difference]: Without dead ends: 575 [2022-11-02 20:13:37,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:13:37,826 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 1000 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:37,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 1474 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:13:37,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-11-02 20:13:37,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 221. [2022-11-02 20:13:37,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.4272727272727272) internal successors, (314), 220 states have internal predecessors, (314), 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) [2022-11-02 20:13:37,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 314 transitions. [2022-11-02 20:13:37,833 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 314 transitions. Word has length 182 [2022-11-02 20:13:37,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:37,834 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 314 transitions. [2022-11-02 20:13:37,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:37,834 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 314 transitions. [2022-11-02 20:13:37,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:37,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:37,836 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:37,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:38,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:38,053 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:38,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:38,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1785681783, now seen corresponding path program 1 times [2022-11-02 20:13:38,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:38,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913587196] [2022-11-02 20:13:38,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:38,055 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:38,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:38,056 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:38,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:13:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:38,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:13:38,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:38,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:38,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:38,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:38,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913587196] [2022-11-02 20:13:38,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913587196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:38,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:38,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:38,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107570492] [2022-11-02 20:13:38,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:38,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:13:38,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:38,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:13:38,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:38,792 INFO L87 Difference]: Start difference. First operand 221 states and 314 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:39,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:39,119 INFO L93 Difference]: Finished difference Result 754 states and 1105 transitions. [2022-11-02 20:13:39,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:13:39,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:39,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:39,122 INFO L225 Difference]: With dead ends: 754 [2022-11-02 20:13:39,122 INFO L226 Difference]: Without dead ends: 575 [2022-11-02 20:13:39,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:13:39,124 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 993 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:39,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1470 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:13:39,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-11-02 20:13:39,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 223. [2022-11-02 20:13:39,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.4234234234234233) internal successors, (316), 222 states have internal predecessors, (316), 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) [2022-11-02 20:13:39,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 316 transitions. [2022-11-02 20:13:39,132 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 316 transitions. Word has length 182 [2022-11-02 20:13:39,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:39,133 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 316 transitions. [2022-11-02 20:13:39,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:39,134 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 316 transitions. [2022-11-02 20:13:39,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:39,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:39,135 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:39,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:39,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:39,361 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:39,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:39,362 INFO L85 PathProgramCache]: Analyzing trace with hash -2188039, now seen corresponding path program 1 times [2022-11-02 20:13:39,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:39,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895052372] [2022-11-02 20:13:39,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:39,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:39,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:39,365 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:39,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:13:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:39,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:13:39,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:40,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:40,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:40,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895052372] [2022-11-02 20:13:40,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895052372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:40,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:40,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:40,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271204436] [2022-11-02 20:13:40,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:40,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:13:40,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:40,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:13:40,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:40,101 INFO L87 Difference]: Start difference. First operand 223 states and 316 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:40,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:40,296 INFO L93 Difference]: Finished difference Result 754 states and 1104 transitions. [2022-11-02 20:13:40,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:13:40,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:40,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:40,299 INFO L225 Difference]: With dead ends: 754 [2022-11-02 20:13:40,299 INFO L226 Difference]: Without dead ends: 575 [2022-11-02 20:13:40,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:13:40,300 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 988 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:40,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 1507 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:13:40,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-11-02 20:13:40,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 225. [2022-11-02 20:13:40,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.4196428571428572) internal successors, (318), 224 states have internal predecessors, (318), 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) [2022-11-02 20:13:40,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 318 transitions. [2022-11-02 20:13:40,308 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 318 transitions. Word has length 182 [2022-11-02 20:13:40,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:40,308 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 318 transitions. [2022-11-02 20:13:40,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:40,309 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 318 transitions. [2022-11-02 20:13:40,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:40,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:40,310 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:40,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:40,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:40,526 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:40,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:40,527 INFO L85 PathProgramCache]: Analyzing trace with hash 67459835, now seen corresponding path program 1 times [2022-11-02 20:13:40,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:40,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226855313] [2022-11-02 20:13:40,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:40,528 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:40,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:40,529 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:40,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:13:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:40,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:13:41,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:41,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:41,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:41,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:41,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226855313] [2022-11-02 20:13:41,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226855313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:41,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:41,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:13:41,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609190851] [2022-11-02 20:13:41,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:41,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:13:41,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:41,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:13:41,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:13:41,215 INFO L87 Difference]: Start difference. First operand 225 states and 318 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2022-11-02 20:13:41,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:41,465 INFO L93 Difference]: Finished difference Result 715 states and 1047 transitions. [2022-11-02 20:13:41,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:13:41,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:41,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:41,467 INFO L225 Difference]: With dead ends: 715 [2022-11-02 20:13:41,467 INFO L226 Difference]: Without dead ends: 536 [2022-11-02 20:13:41,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:41,468 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 662 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:41,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 953 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:13:41,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-02 20:13:41,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 227. [2022-11-02 20:13:41,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.415929203539823) internal successors, (320), 226 states have internal predecessors, (320), 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) [2022-11-02 20:13:41,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 320 transitions. [2022-11-02 20:13:41,476 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 320 transitions. Word has length 182 [2022-11-02 20:13:41,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:41,476 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 320 transitions. [2022-11-02 20:13:41,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2022-11-02 20:13:41,476 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 320 transitions. [2022-11-02 20:13:41,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:41,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:41,478 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:41,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:41,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:41,678 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:41,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:41,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1466413437, now seen corresponding path program 1 times [2022-11-02 20:13:41,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:41,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748092636] [2022-11-02 20:13:41,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:41,680 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:41,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:41,681 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:41,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:13:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:42,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:13:42,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:42,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:42,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:42,378 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:42,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748092636] [2022-11-02 20:13:42,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748092636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:42,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:42,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:42,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113062914] [2022-11-02 20:13:42,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:42,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:13:42,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:42,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:13:42,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:42,395 INFO L87 Difference]: Start difference. First operand 227 states and 320 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:42,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:42,671 INFO L93 Difference]: Finished difference Result 762 states and 1114 transitions. [2022-11-02 20:13:42,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:13:42,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:42,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:42,674 INFO L225 Difference]: With dead ends: 762 [2022-11-02 20:13:42,674 INFO L226 Difference]: Without dead ends: 583 [2022-11-02 20:13:42,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:13:42,676 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 987 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:42,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 1469 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:13:42,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-11-02 20:13:42,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 229. [2022-11-02 20:13:42,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.412280701754386) internal successors, (322), 228 states have internal predecessors, (322), 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) [2022-11-02 20:13:42,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 322 transitions. [2022-11-02 20:13:42,683 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 322 transitions. Word has length 182 [2022-11-02 20:13:42,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:42,684 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 322 transitions. [2022-11-02 20:13:42,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:42,684 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 322 transitions. [2022-11-02 20:13:42,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:42,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:42,686 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:42,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:42,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:42,904 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:42,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:42,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1829879935, now seen corresponding path program 1 times [2022-11-02 20:13:42,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:42,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171057014] [2022-11-02 20:13:42,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:42,906 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:42,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:42,907 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:42,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:13:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:43,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:13:43,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:43,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:43,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:43,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:43,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171057014] [2022-11-02 20:13:43,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171057014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:43,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:43,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:43,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271436509] [2022-11-02 20:13:43,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:43,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:13:43,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:43,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:13:43,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:43,608 INFO L87 Difference]: Start difference. First operand 229 states and 322 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:43,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:43,890 INFO L93 Difference]: Finished difference Result 762 states and 1113 transitions. [2022-11-02 20:13:43,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:13:43,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:43,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:43,893 INFO L225 Difference]: With dead ends: 762 [2022-11-02 20:13:43,893 INFO L226 Difference]: Without dead ends: 583 [2022-11-02 20:13:43,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:13:43,898 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 980 mSDsluCounter, 1175 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:43,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 1465 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:13:43,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-11-02 20:13:43,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 231. [2022-11-02 20:13:43,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.4086956521739131) internal successors, (324), 230 states have internal predecessors, (324), 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) [2022-11-02 20:13:43,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 324 transitions. [2022-11-02 20:13:43,906 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 324 transitions. Word has length 182 [2022-11-02 20:13:43,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:43,907 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 324 transitions. [2022-11-02 20:13:43,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:43,907 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 324 transitions. [2022-11-02 20:13:43,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:43,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:43,908 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:43,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:44,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:44,122 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:44,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:44,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1285007361, now seen corresponding path program 1 times [2022-11-02 20:13:44,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:44,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656398488] [2022-11-02 20:13:44,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:44,124 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:44,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:44,125 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:44,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:13:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:44,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:13:44,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:44,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:44,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:44,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:44,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656398488] [2022-11-02 20:13:44,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656398488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:44,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:44,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:13:44,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848291458] [2022-11-02 20:13:44,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:44,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:13:44,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:44,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:13:44,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:13:44,789 INFO L87 Difference]: Start difference. First operand 231 states and 324 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:13:44,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:44,975 INFO L93 Difference]: Finished difference Result 744 states and 1085 transitions. [2022-11-02 20:13:44,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:13:44,978 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:44,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:44,980 INFO L225 Difference]: With dead ends: 744 [2022-11-02 20:13:44,980 INFO L226 Difference]: Without dead ends: 565 [2022-11-02 20:13:44,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:13:44,985 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 1181 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 1937 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:44,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 1937 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:13:44,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-11-02 20:13:45,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 235. [2022-11-02 20:13:45,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.4059829059829059) internal successors, (329), 234 states have internal predecessors, (329), 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) [2022-11-02 20:13:45,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 329 transitions. [2022-11-02 20:13:45,011 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 329 transitions. Word has length 182 [2022-11-02 20:13:45,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:45,012 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 329 transitions. [2022-11-02 20:13:45,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:13:45,012 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 329 transitions. [2022-11-02 20:13:45,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:45,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:45,013 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:45,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:45,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:45,239 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:45,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:45,240 INFO L85 PathProgramCache]: Analyzing trace with hash 850501763, now seen corresponding path program 1 times [2022-11-02 20:13:45,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:45,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279397487] [2022-11-02 20:13:45,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:45,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:45,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:45,242 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:45,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:13:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:45,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:13:45,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:46,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:46,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:46,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:46,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279397487] [2022-11-02 20:13:46,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279397487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:46,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:46,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:13:46,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363564707] [2022-11-02 20:13:46,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:46,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:13:46,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:46,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:13:46,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:13:46,087 INFO L87 Difference]: Start difference. First operand 235 states and 329 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:13:46,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:46,564 INFO L93 Difference]: Finished difference Result 740 states and 1078 transitions. [2022-11-02 20:13:46,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:13:46,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:46,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:46,567 INFO L225 Difference]: With dead ends: 740 [2022-11-02 20:13:46,568 INFO L226 Difference]: Without dead ends: 561 [2022-11-02 20:13:46,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:13:46,569 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 1160 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:46,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1160 Valid, 1777 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:13:46,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-02 20:13:46,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 237. [2022-11-02 20:13:46,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.402542372881356) internal successors, (331), 236 states have internal predecessors, (331), 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) [2022-11-02 20:13:46,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 331 transitions. [2022-11-02 20:13:46,577 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 331 transitions. Word has length 182 [2022-11-02 20:13:46,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:46,578 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 331 transitions. [2022-11-02 20:13:46,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:13:46,578 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 331 transitions. [2022-11-02 20:13:46,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:46,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:46,579 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:46,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:46,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:46,797 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:46,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:46,798 INFO L85 PathProgramCache]: Analyzing trace with hash 143905157, now seen corresponding path program 1 times [2022-11-02 20:13:46,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:46,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869564444] [2022-11-02 20:13:46,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:46,799 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:46,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:46,801 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:46,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 20:13:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:47,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:13:47,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:47,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:47,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:47,391 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:47,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869564444] [2022-11-02 20:13:47,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869564444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:47,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:47,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:47,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119544649] [2022-11-02 20:13:47,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:47,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:13:47,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:47,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:13:47,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:47,394 INFO L87 Difference]: Start difference. First operand 237 states and 331 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:47,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:47,565 INFO L93 Difference]: Finished difference Result 716 states and 1043 transitions. [2022-11-02 20:13:47,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:13:47,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:47,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:47,569 INFO L225 Difference]: With dead ends: 716 [2022-11-02 20:13:47,569 INFO L226 Difference]: Without dead ends: 537 [2022-11-02 20:13:47,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:13:47,570 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 872 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:47,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 1429 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:13:47,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-02 20:13:47,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 239. [2022-11-02 20:13:47,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.3991596638655461) internal successors, (333), 238 states have internal predecessors, (333), 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) [2022-11-02 20:13:47,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 333 transitions. [2022-11-02 20:13:47,583 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 333 transitions. Word has length 182 [2022-11-02 20:13:47,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:47,584 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 333 transitions. [2022-11-02 20:13:47,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:47,584 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 333 transitions. [2022-11-02 20:13:47,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:47,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:47,586 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:47,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-11-02 20:13:47,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:47,790 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:47,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:47,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1005738759, now seen corresponding path program 1 times [2022-11-02 20:13:47,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:47,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811361894] [2022-11-02 20:13:47,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:47,792 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:47,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:47,793 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:47,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 20:13:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:48,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:13:48,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:48,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:48,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:48,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811361894] [2022-11-02 20:13:48,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811361894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:48,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:48,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:48,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825510529] [2022-11-02 20:13:48,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:48,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:13:48,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:48,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:13:48,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:48,493 INFO L87 Difference]: Start difference. First operand 239 states and 333 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:48,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:48,692 INFO L93 Difference]: Finished difference Result 770 states and 1121 transitions. [2022-11-02 20:13:48,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:13:48,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:48,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:48,695 INFO L225 Difference]: With dead ends: 770 [2022-11-02 20:13:48,695 INFO L226 Difference]: Without dead ends: 591 [2022-11-02 20:13:48,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:13:48,697 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 959 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:48,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 1491 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:13:48,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-11-02 20:13:48,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 243. [2022-11-02 20:13:48,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.396694214876033) internal successors, (338), 242 states have internal predecessors, (338), 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) [2022-11-02 20:13:48,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 338 transitions. [2022-11-02 20:13:48,705 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 338 transitions. Word has length 182 [2022-11-02 20:13:48,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:48,706 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 338 transitions. [2022-11-02 20:13:48,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:48,706 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 338 transitions. [2022-11-02 20:13:48,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:48,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:48,707 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:48,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:48,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:48,926 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:48,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:48,927 INFO L85 PathProgramCache]: Analyzing trace with hash -276433527, now seen corresponding path program 1 times [2022-11-02 20:13:48,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:48,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332448187] [2022-11-02 20:13:48,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:48,928 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:48,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:48,929 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:48,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 20:13:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:49,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:13:49,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:49,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:49,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:49,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:49,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332448187] [2022-11-02 20:13:49,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332448187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:49,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:49,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:49,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466391159] [2022-11-02 20:13:49,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:49,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:13:49,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:49,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:13:49,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:49,689 INFO L87 Difference]: Start difference. First operand 243 states and 338 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:49,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:49,874 INFO L93 Difference]: Finished difference Result 780 states and 1135 transitions. [2022-11-02 20:13:49,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:13:49,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:49,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:49,881 INFO L225 Difference]: With dead ends: 780 [2022-11-02 20:13:49,882 INFO L226 Difference]: Without dead ends: 601 [2022-11-02 20:13:49,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:13:49,883 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 961 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:49,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 1499 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:13:49,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-11-02 20:13:49,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 249. [2022-11-02 20:13:49,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.3951612903225807) internal successors, (346), 248 states have internal predecessors, (346), 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) [2022-11-02 20:13:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 346 transitions. [2022-11-02 20:13:49,895 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 346 transitions. Word has length 182 [2022-11-02 20:13:49,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:49,895 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 346 transitions. [2022-11-02 20:13:49,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:49,896 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 346 transitions. [2022-11-02 20:13:49,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:49,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:49,897 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:49,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:50,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:50,115 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:50,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:50,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1450711435, now seen corresponding path program 1 times [2022-11-02 20:13:50,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:50,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039317598] [2022-11-02 20:13:50,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:50,117 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:50,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:50,118 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:50,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 20:13:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:50,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:13:50,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:50,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:50,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:50,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:50,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039317598] [2022-11-02 20:13:50,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039317598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:50,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:50,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:13:50,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202344310] [2022-11-02 20:13:50,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:50,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:13:50,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:50,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:13:50,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:13:50,871 INFO L87 Difference]: Start difference. First operand 249 states and 346 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2022-11-02 20:13:51,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:51,025 INFO L93 Difference]: Finished difference Result 608 states and 879 transitions. [2022-11-02 20:13:51,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:13:51,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:51,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:51,028 INFO L225 Difference]: With dead ends: 608 [2022-11-02 20:13:51,028 INFO L226 Difference]: Without dead ends: 429 [2022-11-02 20:13:51,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:51,029 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 435 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:51,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 834 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:13:51,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-11-02 20:13:51,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 251. [2022-11-02 20:13:51,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.392) internal successors, (348), 250 states have internal predecessors, (348), 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) [2022-11-02 20:13:51,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 348 transitions. [2022-11-02 20:13:51,038 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 348 transitions. Word has length 182 [2022-11-02 20:13:51,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:51,038 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 348 transitions. [2022-11-02 20:13:51,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2022-11-02 20:13:51,039 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 348 transitions. [2022-11-02 20:13:51,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:51,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:51,040 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:51,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:51,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:51,259 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:51,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:51,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1196892919, now seen corresponding path program 1 times [2022-11-02 20:13:51,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:51,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559772759] [2022-11-02 20:13:51,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:51,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:51,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:51,263 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:51,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 20:13:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:51,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:13:51,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:51,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:51,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:51,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:51,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559772759] [2022-11-02 20:13:51,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559772759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:51,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:51,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:13:51,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148869826] [2022-11-02 20:13:51,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:51,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:13:51,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:51,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:13:51,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:13:51,940 INFO L87 Difference]: Start difference. First operand 251 states and 348 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2022-11-02 20:13:51,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:51,998 INFO L93 Difference]: Finished difference Result 715 states and 1038 transitions. [2022-11-02 20:13:51,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:13:51,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:51,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:52,001 INFO L225 Difference]: With dead ends: 715 [2022-11-02 20:13:52,001 INFO L226 Difference]: Without dead ends: 536 [2022-11-02 20:13:52,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:52,003 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 589 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:52,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 1017 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:13:52,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-02 20:13:52,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 253. [2022-11-02 20:13:52,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.3888888888888888) internal successors, (350), 252 states have internal predecessors, (350), 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) [2022-11-02 20:13:52,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 350 transitions. [2022-11-02 20:13:52,012 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 350 transitions. Word has length 182 [2022-11-02 20:13:52,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:52,013 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 350 transitions. [2022-11-02 20:13:52,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2022-11-02 20:13:52,013 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 350 transitions. [2022-11-02 20:13:52,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:52,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:52,014 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:52,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-02 20:13:52,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:52,235 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:52,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:52,236 INFO L85 PathProgramCache]: Analyzing trace with hash 2059489803, now seen corresponding path program 1 times [2022-11-02 20:13:52,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:52,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019114799] [2022-11-02 20:13:52,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:52,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:52,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:52,239 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:52,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 20:13:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:52,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:13:52,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:52,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:52,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:52,994 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:52,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019114799] [2022-11-02 20:13:52,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019114799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:52,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:52,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:13:52,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835653906] [2022-11-02 20:13:52,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:52,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:13:52,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:52,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:13:52,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:13:52,997 INFO L87 Difference]: Start difference. First operand 253 states and 350 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:13:53,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:53,187 INFO L93 Difference]: Finished difference Result 744 states and 1078 transitions. [2022-11-02 20:13:53,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:13:53,188 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:53,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:53,192 INFO L225 Difference]: With dead ends: 744 [2022-11-02 20:13:53,193 INFO L226 Difference]: Without dead ends: 565 [2022-11-02 20:13:53,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:13:53,194 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 1110 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:53,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 1870 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:13:53,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-11-02 20:13:53,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 255. [2022-11-02 20:13:53,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.3858267716535433) internal successors, (352), 254 states have internal predecessors, (352), 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) [2022-11-02 20:13:53,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 352 transitions. [2022-11-02 20:13:53,206 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 352 transitions. Word has length 182 [2022-11-02 20:13:53,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:53,207 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 352 transitions. [2022-11-02 20:13:53,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:13:53,207 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 352 transitions. [2022-11-02 20:13:53,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:53,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:53,209 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:53,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-11-02 20:13:53,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:53,418 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:53,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:53,419 INFO L85 PathProgramCache]: Analyzing trace with hash -82370675, now seen corresponding path program 1 times [2022-11-02 20:13:53,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:53,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628719950] [2022-11-02 20:13:53,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:53,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:53,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:53,422 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:53,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 20:13:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:53,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:13:53,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:54,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:54,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:54,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:54,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628719950] [2022-11-02 20:13:54,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628719950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:54,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:54,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:54,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625346095] [2022-11-02 20:13:54,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:54,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:13:54,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:54,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:13:54,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:54,250 INFO L87 Difference]: Start difference. First operand 255 states and 352 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:54,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:54,458 INFO L93 Difference]: Finished difference Result 788 states and 1143 transitions. [2022-11-02 20:13:54,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:13:54,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:54,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:54,461 INFO L225 Difference]: With dead ends: 788 [2022-11-02 20:13:54,461 INFO L226 Difference]: Without dead ends: 609 [2022-11-02 20:13:54,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:13:54,472 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 947 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:54,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 1493 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:13:54,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-11-02 20:13:54,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 257. [2022-11-02 20:13:54,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.3828125) internal successors, (354), 256 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:54,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 354 transitions. [2022-11-02 20:13:54,481 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 354 transitions. Word has length 182 [2022-11-02 20:13:54,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:54,482 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 354 transitions. [2022-11-02 20:13:54,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:54,482 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 354 transitions. [2022-11-02 20:13:54,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:54,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:54,484 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:54,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:54,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:54,704 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:54,705 INFO L85 PathProgramCache]: Analyzing trace with hash 36070799, now seen corresponding path program 1 times [2022-11-02 20:13:54,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:54,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497075837] [2022-11-02 20:13:54,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:54,706 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:54,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:54,707 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:54,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 20:13:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:55,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:13:55,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:55,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:55,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:55,730 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:55,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497075837] [2022-11-02 20:13:55,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497075837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:55,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:55,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:55,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103695593] [2022-11-02 20:13:55,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:55,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:13:55,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:55,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:13:55,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:55,733 INFO L87 Difference]: Start difference. First operand 257 states and 354 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:55,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:55,963 INFO L93 Difference]: Finished difference Result 716 states and 1036 transitions. [2022-11-02 20:13:55,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:13:55,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:55,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:55,965 INFO L225 Difference]: With dead ends: 716 [2022-11-02 20:13:55,965 INFO L226 Difference]: Without dead ends: 537 [2022-11-02 20:13:55,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:13:55,967 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 805 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:55,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 1388 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:13:55,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-02 20:13:55,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 259. [2022-11-02 20:13:55,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.37984496124031) internal successors, (356), 258 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:55,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 356 transitions. [2022-11-02 20:13:55,977 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 356 transitions. Word has length 182 [2022-11-02 20:13:55,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:55,978 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 356 transitions. [2022-11-02 20:13:55,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:55,978 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 356 transitions. [2022-11-02 20:13:55,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:55,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:55,980 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:56,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:56,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:56,194 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:56,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:56,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1997323247, now seen corresponding path program 1 times [2022-11-02 20:13:56,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:56,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614617410] [2022-11-02 20:13:56,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:56,196 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:56,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:56,197 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:56,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 20:13:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:56,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:13:56,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:57,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:57,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:57,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614617410] [2022-11-02 20:13:57,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614617410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:57,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:57,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:13:57,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049739981] [2022-11-02 20:13:57,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:57,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:13:57,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:57,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:13:57,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:13:57,027 INFO L87 Difference]: Start difference. First operand 259 states and 356 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:13:57,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:57,509 INFO L93 Difference]: Finished difference Result 740 states and 1069 transitions. [2022-11-02 20:13:57,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:13:57,510 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:57,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:57,513 INFO L225 Difference]: With dead ends: 740 [2022-11-02 20:13:57,513 INFO L226 Difference]: Without dead ends: 561 [2022-11-02 20:13:57,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:13:57,514 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 1073 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:57,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 1698 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:13:57,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-02 20:13:57,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 261. [2022-11-02 20:13:57,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.376923076923077) internal successors, (358), 260 states have internal predecessors, (358), 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) [2022-11-02 20:13:57,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 358 transitions. [2022-11-02 20:13:57,524 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 358 transitions. Word has length 182 [2022-11-02 20:13:57,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:57,524 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 358 transitions. [2022-11-02 20:13:57,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:13:57,525 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 358 transitions. [2022-11-02 20:13:57,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:57,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:57,526 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:57,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:57,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:57,746 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:57,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:57,747 INFO L85 PathProgramCache]: Analyzing trace with hash 990501651, now seen corresponding path program 1 times [2022-11-02 20:13:57,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:57,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868393514] [2022-11-02 20:13:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:57,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:57,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:57,749 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:57,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 20:13:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:58,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:13:58,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:58,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:58,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:58,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:58,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868393514] [2022-11-02 20:13:58,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868393514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:58,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:58,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:58,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292530951] [2022-11-02 20:13:58,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:58,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:13:58,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:58,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:13:58,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:58,431 INFO L87 Difference]: Start difference. First operand 261 states and 358 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:58,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:58,593 INFO L93 Difference]: Finished difference Result 716 states and 1034 transitions. [2022-11-02 20:13:58,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:13:58,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:13:58,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:58,595 INFO L225 Difference]: With dead ends: 716 [2022-11-02 20:13:58,596 INFO L226 Difference]: Without dead ends: 537 [2022-11-02 20:13:58,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:13:58,597 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 794 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:58,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1384 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:13:58,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-02 20:13:58,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 263. [2022-11-02 20:13:58,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.3740458015267176) internal successors, (360), 262 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:58,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 360 transitions. [2022-11-02 20:13:58,606 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 360 transitions. Word has length 182 [2022-11-02 20:13:58,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:58,607 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 360 transitions. [2022-11-02 20:13:58,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:13:58,608 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 360 transitions. [2022-11-02 20:13:58,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:13:58,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:58,609 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:58,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-11-02 20:13:58,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:58,822 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:58,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:58,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2021542549, now seen corresponding path program 1 times [2022-11-02 20:13:58,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:58,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601839767] [2022-11-02 20:13:58,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:58,825 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:58,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:58,826 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:58,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 20:13:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:59,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:13:59,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:59,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:59,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:59,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:59,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601839767] [2022-11-02 20:13:59,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601839767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:59,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:59,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:59,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699356096] [2022-11-02 20:13:59,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:59,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:13:59,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:59,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:13:59,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:59,848 INFO L87 Difference]: Start difference. First operand 263 states and 360 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:00,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:00,054 INFO L93 Difference]: Finished difference Result 716 states and 1033 transitions. [2022-11-02 20:14:00,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:14:00,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:00,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:00,058 INFO L225 Difference]: With dead ends: 716 [2022-11-02 20:14:00,058 INFO L226 Difference]: Without dead ends: 537 [2022-11-02 20:14:00,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:00,059 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 779 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:00,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 1374 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:14:00,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-02 20:14:00,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 267. [2022-11-02 20:14:00,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.3721804511278195) internal successors, (365), 266 states have internal predecessors, (365), 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) [2022-11-02 20:14:00,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 365 transitions. [2022-11-02 20:14:00,068 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 365 transitions. Word has length 182 [2022-11-02 20:14:00,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:00,069 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 365 transitions. [2022-11-02 20:14:00,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:00,069 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 365 transitions. [2022-11-02 20:14:00,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:00,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:00,070 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:00,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:00,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:00,284 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:00,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:00,285 INFO L85 PathProgramCache]: Analyzing trace with hash -922039529, now seen corresponding path program 1 times [2022-11-02 20:14:00,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:00,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003135584] [2022-11-02 20:14:00,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:00,286 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:00,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:00,287 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:00,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 20:14:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:00,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:14:00,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:01,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:01,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:01,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003135584] [2022-11-02 20:14:01,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003135584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:01,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:01,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:14:01,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678380586] [2022-11-02 20:14:01,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:01,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:14:01,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:01,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:14:01,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:14:01,068 INFO L87 Difference]: Start difference. First operand 267 states and 365 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:14:01,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:01,510 INFO L93 Difference]: Finished difference Result 740 states and 1066 transitions. [2022-11-02 20:14:01,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:14:01,511 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:01,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:01,512 INFO L225 Difference]: With dead ends: 740 [2022-11-02 20:14:01,512 INFO L226 Difference]: Without dead ends: 561 [2022-11-02 20:14:01,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:14:01,513 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 1039 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:01,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 1666 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:14:01,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-02 20:14:01,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 271. [2022-11-02 20:14:01,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.3703703703703705) internal successors, (370), 270 states have internal predecessors, (370), 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) [2022-11-02 20:14:01,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 370 transitions. [2022-11-02 20:14:01,522 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 370 transitions. Word has length 182 [2022-11-02 20:14:01,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:01,523 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 370 transitions. [2022-11-02 20:14:01,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:14:01,524 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 370 transitions. [2022-11-02 20:14:01,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:01,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:01,525 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:01,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:01,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:01,745 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:01,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:01,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1432345753, now seen corresponding path program 1 times [2022-11-02 20:14:01,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:01,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434192225] [2022-11-02 20:14:01,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:01,747 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:01,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:01,748 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:01,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 20:14:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:02,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:14:02,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:02,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:02,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:02,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:02,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434192225] [2022-11-02 20:14:02,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1434192225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:02,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:02,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:14:02,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161251203] [2022-11-02 20:14:02,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:02,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:14:02,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:02,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:14:02,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:02,426 INFO L87 Difference]: Start difference. First operand 271 states and 370 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:02,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:02,572 INFO L93 Difference]: Finished difference Result 716 states and 1031 transitions. [2022-11-02 20:14:02,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:14:02,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:02,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:02,575 INFO L225 Difference]: With dead ends: 716 [2022-11-02 20:14:02,575 INFO L226 Difference]: Without dead ends: 537 [2022-11-02 20:14:02,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:02,576 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 763 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:02,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 1366 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:14:02,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-02 20:14:02,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 273. [2022-11-02 20:14:02,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.3676470588235294) internal successors, (372), 272 states have internal predecessors, (372), 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) [2022-11-02 20:14:02,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 372 transitions. [2022-11-02 20:14:02,584 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 372 transitions. Word has length 182 [2022-11-02 20:14:02,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:02,585 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 372 transitions. [2022-11-02 20:14:02,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:02,585 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 372 transitions. [2022-11-02 20:14:02,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:02,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:02,587 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:02,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:02,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:02,800 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:02,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:02,800 INFO L85 PathProgramCache]: Analyzing trace with hash 661612187, now seen corresponding path program 1 times [2022-11-02 20:14:02,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:02,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517096389] [2022-11-02 20:14:02,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:02,802 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:02,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:02,803 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:02,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 20:14:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:03,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:14:03,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:03,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:03,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:03,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517096389] [2022-11-02 20:14:03,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517096389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:03,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:03,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:14:03,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348852376] [2022-11-02 20:14:03,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:03,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:14:03,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:03,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:14:03,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:03,699 INFO L87 Difference]: Start difference. First operand 273 states and 372 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:03,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:03,895 INFO L93 Difference]: Finished difference Result 802 states and 1157 transitions. [2022-11-02 20:14:03,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:14:03,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:03,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:03,897 INFO L225 Difference]: With dead ends: 802 [2022-11-02 20:14:03,897 INFO L226 Difference]: Without dead ends: 623 [2022-11-02 20:14:03,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:03,898 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 915 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:03,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 1474 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:14:03,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2022-11-02 20:14:03,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 275. [2022-11-02 20:14:03,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.364963503649635) internal successors, (374), 274 states have internal predecessors, (374), 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) [2022-11-02 20:14:03,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 374 transitions. [2022-11-02 20:14:03,906 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 374 transitions. Word has length 182 [2022-11-02 20:14:03,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:03,906 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 374 transitions. [2022-11-02 20:14:03,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:03,907 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 374 transitions. [2022-11-02 20:14:03,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:03,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:03,908 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:03,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:04,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:04,123 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:04,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:04,123 INFO L85 PathProgramCache]: Analyzing trace with hash 75335965, now seen corresponding path program 1 times [2022-11-02 20:14:04,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:04,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014658799] [2022-11-02 20:14:04,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:04,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:04,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:04,126 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:04,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 20:14:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:04,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:14:04,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:05,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:05,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:05,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:05,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014658799] [2022-11-02 20:14:05,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014658799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:05,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:05,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:14:05,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86337566] [2022-11-02 20:14:05,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:05,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:14:05,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:05,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:14:05,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:14:05,280 INFO L87 Difference]: Start difference. First operand 275 states and 374 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2022-11-02 20:14:05,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:05,442 INFO L93 Difference]: Finished difference Result 715 states and 1028 transitions. [2022-11-02 20:14:05,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:14:05,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:05,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:05,445 INFO L225 Difference]: With dead ends: 715 [2022-11-02 20:14:05,445 INFO L226 Difference]: Without dead ends: 536 [2022-11-02 20:14:05,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:05,446 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 518 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:05,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 985 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:14:05,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-02 20:14:05,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 277. [2022-11-02 20:14:05,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.3623188405797102) internal successors, (376), 276 states have internal predecessors, (376), 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) [2022-11-02 20:14:05,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 376 transitions. [2022-11-02 20:14:05,455 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 376 transitions. Word has length 182 [2022-11-02 20:14:05,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:05,456 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 376 transitions. [2022-11-02 20:14:05,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2022-11-02 20:14:05,457 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 376 transitions. [2022-11-02 20:14:05,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:05,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:05,458 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:05,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:05,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:05,674 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:05,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:05,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1951818783, now seen corresponding path program 1 times [2022-11-02 20:14:05,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:05,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199452637] [2022-11-02 20:14:05,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:05,676 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:05,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:05,677 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:05,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 20:14:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:06,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:14:06,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:06,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:06,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:06,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:06,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199452637] [2022-11-02 20:14:06,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199452637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:06,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:06,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:14:06,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361389945] [2022-11-02 20:14:06,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:06,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:14:06,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:06,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:14:06,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:06,368 INFO L87 Difference]: Start difference. First operand 277 states and 376 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:06,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:06,544 INFO L93 Difference]: Finished difference Result 716 states and 1028 transitions. [2022-11-02 20:14:06,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:14:06,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:06,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:06,550 INFO L225 Difference]: With dead ends: 716 [2022-11-02 20:14:06,550 INFO L226 Difference]: Without dead ends: 537 [2022-11-02 20:14:06,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:06,551 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 742 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:06,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 1354 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:14:06,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-02 20:14:06,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 279. [2022-11-02 20:14:06,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.3597122302158273) internal successors, (378), 278 states have internal predecessors, (378), 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) [2022-11-02 20:14:06,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 378 transitions. [2022-11-02 20:14:06,561 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 378 transitions. Word has length 182 [2022-11-02 20:14:06,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:06,561 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 378 transitions. [2022-11-02 20:14:06,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:06,562 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 378 transitions. [2022-11-02 20:14:06,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:06,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:06,563 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:06,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-11-02 20:14:06,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:06,778 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:06,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:06,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1018292319, now seen corresponding path program 1 times [2022-11-02 20:14:06,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:06,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372781594] [2022-11-02 20:14:06,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:06,781 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:06,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:06,783 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:06,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 20:14:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:07,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:14:07,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:07,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:07,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:07,747 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:07,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372781594] [2022-11-02 20:14:07,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372781594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:07,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:07,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:14:07,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536217860] [2022-11-02 20:14:07,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:07,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:14:07,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:07,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:14:07,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:07,749 INFO L87 Difference]: Start difference. First operand 279 states and 378 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:07,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:07,975 INFO L93 Difference]: Finished difference Result 812 states and 1169 transitions. [2022-11-02 20:14:07,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:14:07,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:07,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:07,980 INFO L225 Difference]: With dead ends: 812 [2022-11-02 20:14:07,980 INFO L226 Difference]: Without dead ends: 633 [2022-11-02 20:14:07,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:07,981 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 913 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:07,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 1476 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:14:07,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-11-02 20:14:07,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 281. [2022-11-02 20:14:07,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.3571428571428572) internal successors, (380), 280 states have internal predecessors, (380), 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) [2022-11-02 20:14:07,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 380 transitions. [2022-11-02 20:14:07,990 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 380 transitions. Word has length 182 [2022-11-02 20:14:07,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:07,991 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 380 transitions. [2022-11-02 20:14:07,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:07,991 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 380 transitions. [2022-11-02 20:14:07,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:07,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:07,993 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:08,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:08,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:08,210 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:08,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:08,211 INFO L85 PathProgramCache]: Analyzing trace with hash -2076130397, now seen corresponding path program 1 times [2022-11-02 20:14:08,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:08,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797162580] [2022-11-02 20:14:08,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:08,212 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:08,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:08,213 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:08,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-02 20:14:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:08,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:14:08,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:09,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:09,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:09,400 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:09,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797162580] [2022-11-02 20:14:09,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797162580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:09,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:09,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:14:09,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147267793] [2022-11-02 20:14:09,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:09,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:14:09,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:09,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:14:09,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:09,403 INFO L87 Difference]: Start difference. First operand 281 states and 380 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:09,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:09,627 INFO L93 Difference]: Finished difference Result 812 states and 1168 transitions. [2022-11-02 20:14:09,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:14:09,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:09,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:09,629 INFO L225 Difference]: With dead ends: 812 [2022-11-02 20:14:09,630 INFO L226 Difference]: Without dead ends: 633 [2022-11-02 20:14:09,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:09,631 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 899 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:09,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 1484 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:14:09,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-11-02 20:14:09,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 285. [2022-11-02 20:14:09,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.3556338028169015) internal successors, (385), 284 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) [2022-11-02 20:14:09,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 385 transitions. [2022-11-02 20:14:09,640 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 385 transitions. Word has length 182 [2022-11-02 20:14:09,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:09,640 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 385 transitions. [2022-11-02 20:14:09,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:09,641 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 385 transitions. [2022-11-02 20:14:09,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:09,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:09,642 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:09,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-02 20:14:09,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:09,864 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:09,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:09,864 INFO L85 PathProgramCache]: Analyzing trace with hash -2049064795, now seen corresponding path program 1 times [2022-11-02 20:14:09,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:09,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099640674] [2022-11-02 20:14:09,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:09,865 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:09,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:09,866 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:09,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-02 20:14:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:10,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:14:10,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:10,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:10,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:10,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:10,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099640674] [2022-11-02 20:14:10,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099640674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:10,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:10,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:14:10,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069883068] [2022-11-02 20:14:10,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:10,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:14:10,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:10,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:14:10,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:10,609 INFO L87 Difference]: Start difference. First operand 285 states and 385 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:10,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:10,775 INFO L93 Difference]: Finished difference Result 716 states and 1025 transitions. [2022-11-02 20:14:10,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:14:10,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:10,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:10,778 INFO L225 Difference]: With dead ends: 716 [2022-11-02 20:14:10,779 INFO L226 Difference]: Without dead ends: 537 [2022-11-02 20:14:10,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:10,780 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 716 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:10,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1339 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:14:10,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-02 20:14:10,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 287. [2022-11-02 20:14:10,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.3531468531468531) internal successors, (387), 286 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) [2022-11-02 20:14:10,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 387 transitions. [2022-11-02 20:14:10,789 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 387 transitions. Word has length 182 [2022-11-02 20:14:10,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:10,789 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 387 transitions. [2022-11-02 20:14:10,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:10,790 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 387 transitions. [2022-11-02 20:14:10,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:10,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:10,791 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:10,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:11,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:11,012 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:11,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:11,013 INFO L85 PathProgramCache]: Analyzing trace with hash -314960345, now seen corresponding path program 1 times [2022-11-02 20:14:11,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:11,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185130994] [2022-11-02 20:14:11,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:11,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:11,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:11,016 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:11,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-02 20:14:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:11,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:14:11,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:11,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:11,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:11,999 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:11,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185130994] [2022-11-02 20:14:11,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [185130994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:12,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:12,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:14:12,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173535215] [2022-11-02 20:14:12,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:12,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:14:12,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:12,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:14:12,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:12,002 INFO L87 Difference]: Start difference. First operand 287 states and 387 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:12,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:12,229 INFO L93 Difference]: Finished difference Result 820 states and 1178 transitions. [2022-11-02 20:14:12,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:14:12,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:12,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:12,231 INFO L225 Difference]: With dead ends: 820 [2022-11-02 20:14:12,232 INFO L226 Difference]: Without dead ends: 641 [2022-11-02 20:14:12,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:12,233 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 902 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:12,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 1472 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:14:12,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-11-02 20:14:12,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 289. [2022-11-02 20:14:12,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.3506944444444444) internal successors, (389), 288 states have internal predecessors, (389), 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) [2022-11-02 20:14:12,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 389 transitions. [2022-11-02 20:14:12,242 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 389 transitions. Word has length 182 [2022-11-02 20:14:12,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:12,243 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 389 transitions. [2022-11-02 20:14:12,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:12,243 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 389 transitions. [2022-11-02 20:14:12,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:12,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:12,245 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:12,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:12,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:12,459 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:12,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:12,459 INFO L85 PathProgramCache]: Analyzing trace with hash 2068964393, now seen corresponding path program 1 times [2022-11-02 20:14:12,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:12,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105530235] [2022-11-02 20:14:12,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:12,460 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:12,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:12,464 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:12,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-02 20:14:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:13,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:14:13,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:13,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:13,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:13,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105530235] [2022-11-02 20:14:13,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105530235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:13,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:13,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:14:13,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673323794] [2022-11-02 20:14:13,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:13,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:14:13,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:13,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:14:13,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:14:13,585 INFO L87 Difference]: Start difference. First operand 289 states and 389 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:14:14,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:14,597 INFO L93 Difference]: Finished difference Result 1254 states and 1809 transitions. [2022-11-02 20:14:14,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:14:14,597 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:14,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:14,603 INFO L225 Difference]: With dead ends: 1254 [2022-11-02 20:14:14,603 INFO L226 Difference]: Without dead ends: 1075 [2022-11-02 20:14:14,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:14:14,606 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 2437 mSDsluCounter, 3548 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2437 SdHoareTripleChecker+Valid, 3914 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:14,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2437 Valid, 3914 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:14:14,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2022-11-02 20:14:14,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 339. [2022-11-02 20:14:14,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.3402366863905326) internal successors, (453), 338 states have internal predecessors, (453), 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) [2022-11-02 20:14:14,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 453 transitions. [2022-11-02 20:14:14,618 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 453 transitions. Word has length 182 [2022-11-02 20:14:14,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:14,618 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 453 transitions. [2022-11-02 20:14:14,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:14:14,620 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 453 transitions. [2022-11-02 20:14:14,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:14,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:14,622 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:14,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:14,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:14,842 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:14,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:14,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1101613739, now seen corresponding path program 1 times [2022-11-02 20:14:14,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:14,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892359715] [2022-11-02 20:14:14,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:14,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:14,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:14,845 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:14,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-02 20:14:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:15,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:14:15,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:15,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:15,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:15,999 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:16,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892359715] [2022-11-02 20:14:16,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892359715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:16,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:16,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:14:16,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683007354] [2022-11-02 20:14:16,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:16,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:14:16,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:16,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:14:16,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:14:16,003 INFO L87 Difference]: Start difference. First operand 339 states and 453 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:14:16,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:16,264 INFO L93 Difference]: Finished difference Result 898 states and 1280 transitions. [2022-11-02 20:14:16,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:14:16,265 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:16,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:16,267 INFO L225 Difference]: With dead ends: 898 [2022-11-02 20:14:16,267 INFO L226 Difference]: Without dead ends: 693 [2022-11-02 20:14:16,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:14:16,268 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1059 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:16,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 1794 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:14:16,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-11-02 20:14:16,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 345. [2022-11-02 20:14:16,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.3372093023255813) internal successors, (460), 344 states have internal predecessors, (460), 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) [2022-11-02 20:14:16,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 460 transitions. [2022-11-02 20:14:16,278 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 460 transitions. Word has length 182 [2022-11-02 20:14:16,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:16,279 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 460 transitions. [2022-11-02 20:14:16,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:14:16,279 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 460 transitions. [2022-11-02 20:14:16,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:16,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:16,280 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:16,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:16,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:16,494 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:16,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:16,495 INFO L85 PathProgramCache]: Analyzing trace with hash 608987565, now seen corresponding path program 1 times [2022-11-02 20:14:16,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:16,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [277610866] [2022-11-02 20:14:16,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:16,497 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:16,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:16,498 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:16,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-02 20:14:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:16,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:14:17,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:17,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:17,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:17,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:17,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [277610866] [2022-11-02 20:14:17,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [277610866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:17,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:17,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:14:17,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583021462] [2022-11-02 20:14:17,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:17,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:14:17,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:17,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:14:17,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:14:17,385 INFO L87 Difference]: Start difference. First operand 345 states and 460 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:14:17,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:17,836 INFO L93 Difference]: Finished difference Result 844 states and 1198 transitions. [2022-11-02 20:14:17,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:14:17,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:17,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:17,839 INFO L225 Difference]: With dead ends: 844 [2022-11-02 20:14:17,839 INFO L226 Difference]: Without dead ends: 639 [2022-11-02 20:14:17,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:14:17,841 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 949 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:17,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 1587 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:14:17,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-11-02 20:14:17,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 347. [2022-11-02 20:14:17,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.3352601156069364) internal successors, (462), 346 states have internal predecessors, (462), 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) [2022-11-02 20:14:17,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 462 transitions. [2022-11-02 20:14:17,858 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 462 transitions. Word has length 182 [2022-11-02 20:14:17,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:17,858 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 462 transitions. [2022-11-02 20:14:17,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:14:17,858 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 462 transitions. [2022-11-02 20:14:17,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:17,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:17,860 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:17,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2022-11-02 20:14:18,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:18,060 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:18,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:18,061 INFO L85 PathProgramCache]: Analyzing trace with hash -607166161, now seen corresponding path program 1 times [2022-11-02 20:14:18,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:18,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041926536] [2022-11-02 20:14:18,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:18,062 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:18,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:18,063 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:18,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-02 20:14:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:18,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:14:18,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:19,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:19,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:19,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041926536] [2022-11-02 20:14:19,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041926536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:19,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:19,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:14:19,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219489745] [2022-11-02 20:14:19,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:19,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:14:19,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:19,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:14:19,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:19,039 INFO L87 Difference]: Start difference. First operand 347 states and 462 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:19,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:19,241 INFO L93 Difference]: Finished difference Result 958 states and 1367 transitions. [2022-11-02 20:14:19,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:14:19,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:19,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:19,250 INFO L225 Difference]: With dead ends: 958 [2022-11-02 20:14:19,250 INFO L226 Difference]: Without dead ends: 753 [2022-11-02 20:14:19,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:19,251 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 886 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:19,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 1465 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:14:19,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-11-02 20:14:19,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 351. [2022-11-02 20:14:19,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.3342857142857143) internal successors, (467), 350 states have internal predecessors, (467), 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) [2022-11-02 20:14:19,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 467 transitions. [2022-11-02 20:14:19,262 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 467 transitions. Word has length 182 [2022-11-02 20:14:19,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:19,263 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 467 transitions. [2022-11-02 20:14:19,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:19,263 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 467 transitions. [2022-11-02 20:14:19,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:19,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:19,264 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:19,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:19,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:19,484 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:19,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:19,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1024562767, now seen corresponding path program 1 times [2022-11-02 20:14:19,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:19,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927821287] [2022-11-02 20:14:19,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:19,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:19,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:19,487 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:19,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-02 20:14:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:19,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:14:20,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:20,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:20,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:20,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:20,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927821287] [2022-11-02 20:14:20,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927821287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:20,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:20,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:14:20,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599473460] [2022-11-02 20:14:20,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:20,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:14:20,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:20,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:14:20,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:14:20,615 INFO L87 Difference]: Start difference. First operand 351 states and 467 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:14:20,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:20,885 INFO L93 Difference]: Finished difference Result 907 states and 1290 transitions. [2022-11-02 20:14:20,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:14:20,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:20,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:20,891 INFO L225 Difference]: With dead ends: 907 [2022-11-02 20:14:20,891 INFO L226 Difference]: Without dead ends: 702 [2022-11-02 20:14:20,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:14:20,895 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 1045 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:20,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 1778 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:14:20,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-11-02 20:14:20,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 353. [2022-11-02 20:14:20,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.3323863636363635) internal successors, (469), 352 states have internal predecessors, (469), 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) [2022-11-02 20:14:20,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 469 transitions. [2022-11-02 20:14:20,905 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 469 transitions. Word has length 182 [2022-11-02 20:14:20,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:20,905 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 469 transitions. [2022-11-02 20:14:20,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:14:20,906 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 469 transitions. [2022-11-02 20:14:20,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:20,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:20,907 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:20,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:21,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:21,129 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:21,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:21,129 INFO L85 PathProgramCache]: Analyzing trace with hash 937011891, now seen corresponding path program 1 times [2022-11-02 20:14:21,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:21,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881362951] [2022-11-02 20:14:21,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:21,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:21,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:21,131 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:21,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-02 20:14:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:21,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:14:21,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:22,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:22,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:22,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881362951] [2022-11-02 20:14:22,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881362951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:22,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:22,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:14:22,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206865298] [2022-11-02 20:14:22,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:22,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:14:22,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:22,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:14:22,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:14:22,126 INFO L87 Difference]: Start difference. First operand 353 states and 469 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:14:22,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:22,631 INFO L93 Difference]: Finished difference Result 844 states and 1195 transitions. [2022-11-02 20:14:22,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:14:22,632 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:22,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:22,633 INFO L225 Difference]: With dead ends: 844 [2022-11-02 20:14:22,633 INFO L226 Difference]: Without dead ends: 639 [2022-11-02 20:14:22,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:14:22,634 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 915 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:22,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 1555 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:14:22,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-11-02 20:14:22,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 357. [2022-11-02 20:14:22,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.3314606741573034) internal successors, (474), 356 states have internal predecessors, (474), 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) [2022-11-02 20:14:22,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 474 transitions. [2022-11-02 20:14:22,645 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 474 transitions. Word has length 182 [2022-11-02 20:14:22,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:22,646 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 474 transitions. [2022-11-02 20:14:22,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2022-11-02 20:14:22,646 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 474 transitions. [2022-11-02 20:14:22,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:22,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:22,648 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:22,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-11-02 20:14:22,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:22,848 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:22,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:22,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2097038155, now seen corresponding path program 1 times [2022-11-02 20:14:22,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:22,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730181542] [2022-11-02 20:14:22,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:22,850 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:22,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:22,851 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:22,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-02 20:14:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:23,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:14:23,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:23,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:23,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:23,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:23,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730181542] [2022-11-02 20:14:23,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730181542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:23,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:23,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:14:23,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653197748] [2022-11-02 20:14:23,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:23,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:14:23,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:23,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:14:23,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:23,628 INFO L87 Difference]: Start difference. First operand 357 states and 474 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:23,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:23,819 INFO L93 Difference]: Finished difference Result 820 states and 1160 transitions. [2022-11-02 20:14:23,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:14:23,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:23,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:23,822 INFO L225 Difference]: With dead ends: 820 [2022-11-02 20:14:23,822 INFO L226 Difference]: Without dead ends: 615 [2022-11-02 20:14:23,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:23,824 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 652 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:23,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1302 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:14:23,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-11-02 20:14:23,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 359. [2022-11-02 20:14:23,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.329608938547486) internal successors, (476), 358 states have internal predecessors, (476), 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) [2022-11-02 20:14:23,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 476 transitions. [2022-11-02 20:14:23,863 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 476 transitions. Word has length 182 [2022-11-02 20:14:23,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:23,863 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 476 transitions. [2022-11-02 20:14:23,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:23,864 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 476 transitions. [2022-11-02 20:14:23,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:23,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:23,865 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:23,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:24,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:24,078 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:24,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:24,079 INFO L85 PathProgramCache]: Analyzing trace with hash -710252745, now seen corresponding path program 1 times [2022-11-02 20:14:24,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:24,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448859596] [2022-11-02 20:14:24,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:24,080 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:24,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:24,081 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:24,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-02 20:14:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:24,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:14:24,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:25,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:25,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:25,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:25,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448859596] [2022-11-02 20:14:25,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448859596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:25,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:25,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:14:25,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779413521] [2022-11-02 20:14:25,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:25,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:14:25,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:25,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:14:25,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:25,199 INFO L87 Difference]: Start difference. First operand 359 states and 476 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:25,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:25,419 INFO L93 Difference]: Finished difference Result 966 states and 1375 transitions. [2022-11-02 20:14:25,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:14:25,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:25,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:25,421 INFO L225 Difference]: With dead ends: 966 [2022-11-02 20:14:25,421 INFO L226 Difference]: Without dead ends: 761 [2022-11-02 20:14:25,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:25,422 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 868 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:25,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 1457 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:14:25,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-11-02 20:14:25,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 361. [2022-11-02 20:14:25,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.3277777777777777) internal successors, (478), 360 states have internal predecessors, (478), 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) [2022-11-02 20:14:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 478 transitions. [2022-11-02 20:14:25,436 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 478 transitions. Word has length 182 [2022-11-02 20:14:25,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:25,436 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 478 transitions. [2022-11-02 20:14:25,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:25,437 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 478 transitions. [2022-11-02 20:14:25,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:25,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:25,438 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:25,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:25,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:25,650 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:25,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:25,651 INFO L85 PathProgramCache]: Analyzing trace with hash -266352071, now seen corresponding path program 1 times [2022-11-02 20:14:25,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:25,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866112971] [2022-11-02 20:14:25,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:25,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:25,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:25,654 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:25,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-02 20:14:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:26,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:14:26,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:26,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:26,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:26,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:26,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866112971] [2022-11-02 20:14:26,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866112971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:26,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:26,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:14:26,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572780628] [2022-11-02 20:14:26,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:26,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:14:26,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:26,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:14:26,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:26,958 INFO L87 Difference]: Start difference. First operand 361 states and 478 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:27,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:27,177 INFO L93 Difference]: Finished difference Result 927 states and 1316 transitions. [2022-11-02 20:14:27,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:14:27,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:27,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:27,179 INFO L225 Difference]: With dead ends: 927 [2022-11-02 20:14:27,179 INFO L226 Difference]: Without dead ends: 722 [2022-11-02 20:14:27,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:27,180 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 814 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:27,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 1435 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:14:27,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-11-02 20:14:27,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 363. [2022-11-02 20:14:27,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.3259668508287292) internal successors, (480), 362 states have internal predecessors, (480), 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) [2022-11-02 20:14:27,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 480 transitions. [2022-11-02 20:14:27,188 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 480 transitions. Word has length 182 [2022-11-02 20:14:27,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:27,189 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 480 transitions. [2022-11-02 20:14:27,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:27,189 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 480 transitions. [2022-11-02 20:14:27,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:27,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:27,191 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:27,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Ended with exit code 0 [2022-11-02 20:14:27,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:27,394 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:27,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:27,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2000029115, now seen corresponding path program 1 times [2022-11-02 20:14:27,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:27,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892796373] [2022-11-02 20:14:27,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:27,396 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:27,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:27,398 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:27,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-02 20:14:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:27,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:14:27,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:28,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:28,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:28,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892796373] [2022-11-02 20:14:28,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892796373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:28,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:28,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:14:28,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233884007] [2022-11-02 20:14:28,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:28,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:14:28,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:28,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:14:28,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:28,179 INFO L87 Difference]: Start difference. First operand 363 states and 480 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:28,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:28,376 INFO L93 Difference]: Finished difference Result 820 states and 1157 transitions. [2022-11-02 20:14:28,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:14:28,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:28,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:28,380 INFO L225 Difference]: With dead ends: 820 [2022-11-02 20:14:28,380 INFO L226 Difference]: Without dead ends: 615 [2022-11-02 20:14:28,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:28,381 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 631 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:28,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 1290 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:14:28,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-11-02 20:14:28,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 365. [2022-11-02 20:14:28,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.3241758241758241) internal successors, (482), 364 states have internal predecessors, (482), 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) [2022-11-02 20:14:28,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 482 transitions. [2022-11-02 20:14:28,392 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 482 transitions. Word has length 182 [2022-11-02 20:14:28,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:28,393 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 482 transitions. [2022-11-02 20:14:28,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2022-11-02 20:14:28,394 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 482 transitions. [2022-11-02 20:14:28,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:28,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:28,395 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:28,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:28,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:28,614 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:28,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:28,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1984510397, now seen corresponding path program 1 times [2022-11-02 20:14:28,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:28,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604032513] [2022-11-02 20:14:28,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:28,616 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:28,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:28,617 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:28,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-02 20:14:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:29,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:14:29,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:29,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:29,761 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:29,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604032513] [2022-11-02 20:14:29,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604032513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:29,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:29,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:14:29,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813636395] [2022-11-02 20:14:29,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:29,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:14:29,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:29,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:14:29,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:14:29,763 INFO L87 Difference]: Start difference. First operand 365 states and 482 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:14:30,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:30,766 INFO L93 Difference]: Finished difference Result 1354 states and 1937 transitions. [2022-11-02 20:14:30,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:14:30,767 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:30,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:30,769 INFO L225 Difference]: With dead ends: 1354 [2022-11-02 20:14:30,769 INFO L226 Difference]: Without dead ends: 1149 [2022-11-02 20:14:30,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:14:30,771 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 2693 mSDsluCounter, 3547 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2693 SdHoareTripleChecker+Valid, 3978 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:30,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2693 Valid, 3978 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:14:30,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2022-11-02 20:14:30,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 413. [2022-11-02 20:14:30,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.3203883495145632) internal successors, (544), 412 states have internal predecessors, (544), 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) [2022-11-02 20:14:30,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 544 transitions. [2022-11-02 20:14:30,784 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 544 transitions. Word has length 182 [2022-11-02 20:14:30,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:30,785 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 544 transitions. [2022-11-02 20:14:30,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:14:30,785 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 544 transitions. [2022-11-02 20:14:30,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:30,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:30,787 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:30,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2022-11-02 20:14:30,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:30,989 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:30,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:30,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1416970561, now seen corresponding path program 1 times [2022-11-02 20:14:30,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:30,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444856376] [2022-11-02 20:14:30,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:30,991 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:30,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:30,992 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:30,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-02 20:14:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:31,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:14:31,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:32,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:32,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:32,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:32,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444856376] [2022-11-02 20:14:32,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444856376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:32,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:32,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:14:32,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118804191] [2022-11-02 20:14:32,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:32,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:14:32,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:32,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:14:32,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:14:32,196 INFO L87 Difference]: Start difference. First operand 413 states and 544 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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) [2022-11-02 20:14:33,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:33,313 INFO L93 Difference]: Finished difference Result 1606 states and 2294 transitions. [2022-11-02 20:14:33,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:14:33,313 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:33,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:33,316 INFO L225 Difference]: With dead ends: 1606 [2022-11-02 20:14:33,316 INFO L226 Difference]: Without dead ends: 1375 [2022-11-02 20:14:33,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:14:33,318 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 2756 mSDsluCounter, 2405 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2756 SdHoareTripleChecker+Valid, 2843 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:33,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2756 Valid, 2843 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:14:33,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2022-11-02 20:14:33,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 493. [2022-11-02 20:14:33,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 1.3252032520325203) internal successors, (652), 492 states have internal predecessors, (652), 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) [2022-11-02 20:14:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 652 transitions. [2022-11-02 20:14:33,337 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 652 transitions. Word has length 182 [2022-11-02 20:14:33,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:33,338 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 652 transitions. [2022-11-02 20:14:33,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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) [2022-11-02 20:14:33,339 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 652 transitions. [2022-11-02 20:14:33,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:33,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:33,341 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:33,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:33,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:33,554 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:33,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:33,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1980603457, now seen corresponding path program 1 times [2022-11-02 20:14:33,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:33,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699541387] [2022-11-02 20:14:33,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:33,556 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:33,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:33,558 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:33,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-02 20:14:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:34,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:14:34,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:34,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:34,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:34,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:34,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699541387] [2022-11-02 20:14:34,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699541387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:34,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:34,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:14:34,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907563872] [2022-11-02 20:14:34,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:34,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:14:34,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:34,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:14:34,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:14:34,693 INFO L87 Difference]: Start difference. First operand 493 states and 652 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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) [2022-11-02 20:14:35,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:35,717 INFO L93 Difference]: Finished difference Result 1666 states and 2379 transitions. [2022-11-02 20:14:35,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:14:35,717 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:35,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:35,719 INFO L225 Difference]: With dead ends: 1666 [2022-11-02 20:14:35,719 INFO L226 Difference]: Without dead ends: 1377 [2022-11-02 20:14:35,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:14:35,720 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 2748 mSDsluCounter, 2423 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2748 SdHoareTripleChecker+Valid, 2868 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:35,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2748 Valid, 2868 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:14:35,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2022-11-02 20:14:35,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 495. [2022-11-02 20:14:35,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.3238866396761133) internal successors, (654), 494 states have internal predecessors, (654), 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) [2022-11-02 20:14:35,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 654 transitions. [2022-11-02 20:14:35,737 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 654 transitions. Word has length 182 [2022-11-02 20:14:35,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:35,738 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 654 transitions. [2022-11-02 20:14:35,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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) [2022-11-02 20:14:35,738 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 654 transitions. [2022-11-02 20:14:35,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:35,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:35,740 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:35,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:35,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:35,957 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:35,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:35,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1890717117, now seen corresponding path program 1 times [2022-11-02 20:14:35,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:35,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738520860] [2022-11-02 20:14:35,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:35,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:35,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:35,961 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:35,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-02 20:14:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:36,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:14:36,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:36,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:36,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:36,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:36,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738520860] [2022-11-02 20:14:36,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738520860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:36,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:36,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:14:36,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042373197] [2022-11-02 20:14:36,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:36,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:14:36,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:36,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:14:36,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:14:36,953 INFO L87 Difference]: Start difference. First operand 495 states and 654 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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) [2022-11-02 20:14:37,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:37,859 INFO L93 Difference]: Finished difference Result 1670 states and 2382 transitions. [2022-11-02 20:14:37,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:14:37,859 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:37,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:37,861 INFO L225 Difference]: With dead ends: 1670 [2022-11-02 20:14:37,861 INFO L226 Difference]: Without dead ends: 1379 [2022-11-02 20:14:37,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:14:37,863 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 2742 mSDsluCounter, 2433 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2742 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:37,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2742 Valid, 2883 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:14:37,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2022-11-02 20:14:37,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 497. [2022-11-02 20:14:37,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.3225806451612903) internal successors, (656), 496 states have internal predecessors, (656), 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) [2022-11-02 20:14:37,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 656 transitions. [2022-11-02 20:14:37,878 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 656 transitions. Word has length 182 [2022-11-02 20:14:37,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:37,878 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 656 transitions. [2022-11-02 20:14:37,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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) [2022-11-02 20:14:37,879 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 656 transitions. [2022-11-02 20:14:37,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:37,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:37,880 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:37,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2022-11-02 20:14:38,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:38,094 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:38,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:38,095 INFO L85 PathProgramCache]: Analyzing trace with hash 558883013, now seen corresponding path program 1 times [2022-11-02 20:14:38,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:38,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516163536] [2022-11-02 20:14:38,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:38,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:38,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:38,097 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:38,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-02 20:14:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:38,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:14:38,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:39,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:39,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:39,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:39,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516163536] [2022-11-02 20:14:39,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516163536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:39,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:39,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:14:39,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000115063] [2022-11-02 20:14:39,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:39,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:14:39,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:39,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:14:39,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:14:39,175 INFO L87 Difference]: Start difference. First operand 497 states and 656 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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) [2022-11-02 20:14:40,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:40,086 INFO L93 Difference]: Finished difference Result 1674 states and 2385 transitions. [2022-11-02 20:14:40,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:14:40,086 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:40,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:40,088 INFO L225 Difference]: With dead ends: 1674 [2022-11-02 20:14:40,088 INFO L226 Difference]: Without dead ends: 1381 [2022-11-02 20:14:40,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:14:40,089 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 2736 mSDsluCounter, 2443 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2736 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:40,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2736 Valid, 2898 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:14:40,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2022-11-02 20:14:40,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 499. [2022-11-02 20:14:40,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.321285140562249) internal successors, (658), 498 states have internal predecessors, (658), 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) [2022-11-02 20:14:40,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 658 transitions. [2022-11-02 20:14:40,098 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 658 transitions. Word has length 182 [2022-11-02 20:14:40,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:40,099 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 658 transitions. [2022-11-02 20:14:40,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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) [2022-11-02 20:14:40,099 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 658 transitions. [2022-11-02 20:14:40,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:40,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:40,100 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:40,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:40,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:40,319 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:40,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:40,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1218414535, now seen corresponding path program 1 times [2022-11-02 20:14:40,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:40,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522587682] [2022-11-02 20:14:40,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:40,321 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:40,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:40,323 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:40,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-02 20:14:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:40,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:14:40,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:41,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:41,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:41,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:41,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522587682] [2022-11-02 20:14:41,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522587682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:41,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:41,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:14:41,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295306173] [2022-11-02 20:14:41,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:41,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:14:41,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:41,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:14:41,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:14:41,538 INFO L87 Difference]: Start difference. First operand 499 states and 658 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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) [2022-11-02 20:14:42,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:42,547 INFO L93 Difference]: Finished difference Result 1678 states and 2388 transitions. [2022-11-02 20:14:42,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:14:42,548 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:42,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:42,550 INFO L225 Difference]: With dead ends: 1678 [2022-11-02 20:14:42,550 INFO L226 Difference]: Without dead ends: 1383 [2022-11-02 20:14:42,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:14:42,551 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 2730 mSDsluCounter, 2453 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2730 SdHoareTripleChecker+Valid, 2913 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:42,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2730 Valid, 2913 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:14:42,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2022-11-02 20:14:42,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 501. [2022-11-02 20:14:42,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.32) internal successors, (660), 500 states have internal predecessors, (660), 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) [2022-11-02 20:14:42,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 660 transitions. [2022-11-02 20:14:42,563 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 660 transitions. Word has length 182 [2022-11-02 20:14:42,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:42,563 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 660 transitions. [2022-11-02 20:14:42,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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) [2022-11-02 20:14:42,563 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 660 transitions. [2022-11-02 20:14:42,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:42,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:42,564 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:42,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:42,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:42,781 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:42,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:42,781 INFO L85 PathProgramCache]: Analyzing trace with hash 374409033, now seen corresponding path program 1 times [2022-11-02 20:14:42,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:42,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540816876] [2022-11-02 20:14:42,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:42,783 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:42,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:42,784 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:42,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-02 20:14:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:43,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:14:43,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:43,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:43,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:43,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:43,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540816876] [2022-11-02 20:14:43,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540816876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:43,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:43,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:14:43,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754594659] [2022-11-02 20:14:43,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:43,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:14:43,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:43,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:14:43,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:14:43,805 INFO L87 Difference]: Start difference. First operand 501 states and 660 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:14:44,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:44,930 INFO L93 Difference]: Finished difference Result 1818 states and 2593 transitions. [2022-11-02 20:14:44,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:14:44,931 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:44,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:44,933 INFO L225 Difference]: With dead ends: 1818 [2022-11-02 20:14:44,933 INFO L226 Difference]: Without dead ends: 1521 [2022-11-02 20:14:44,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:14:44,935 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 3020 mSDsluCounter, 3138 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3020 SdHoareTripleChecker+Valid, 3609 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:44,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3020 Valid, 3609 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:14:44,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2022-11-02 20:14:44,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 505. [2022-11-02 20:14:44,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 1.3194444444444444) internal successors, (665), 504 states have internal predecessors, (665), 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) [2022-11-02 20:14:44,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 665 transitions. [2022-11-02 20:14:44,946 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 665 transitions. Word has length 182 [2022-11-02 20:14:44,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:44,946 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 665 transitions. [2022-11-02 20:14:44,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:14:44,946 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 665 transitions. [2022-11-02 20:14:44,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:44,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:44,948 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:44,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Ended with exit code 0 [2022-11-02 20:14:45,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:45,169 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:45,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:45,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1076008907, now seen corresponding path program 1 times [2022-11-02 20:14:45,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:45,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138958427] [2022-11-02 20:14:45,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:45,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:45,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:45,171 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:45,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-02 20:14:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:45,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:14:45,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:46,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:46,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:46,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:46,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138958427] [2022-11-02 20:14:46,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138958427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:46,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:46,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:14:46,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808163702] [2022-11-02 20:14:46,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:46,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:14:46,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:46,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:14:46,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:14:46,367 INFO L87 Difference]: Start difference. First operand 505 states and 665 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:14:47,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:47,680 INFO L93 Difference]: Finished difference Result 1830 states and 2607 transitions. [2022-11-02 20:14:47,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:14:47,681 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:47,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:47,683 INFO L225 Difference]: With dead ends: 1830 [2022-11-02 20:14:47,683 INFO L226 Difference]: Without dead ends: 1529 [2022-11-02 20:14:47,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:14:47,685 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 3017 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3017 SdHoareTripleChecker+Valid, 3627 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:47,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3017 Valid, 3627 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:14:47,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2022-11-02 20:14:47,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 507. [2022-11-02 20:14:47,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 506 states have (on average 1.3181818181818181) internal successors, (667), 506 states have internal predecessors, (667), 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) [2022-11-02 20:14:47,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 667 transitions. [2022-11-02 20:14:47,701 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 667 transitions. Word has length 182 [2022-11-02 20:14:47,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:47,701 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 667 transitions. [2022-11-02 20:14:47,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:14:47,702 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 667 transitions. [2022-11-02 20:14:47,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:47,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:47,703 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:47,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2022-11-02 20:14:47,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:47,903 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:47,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:47,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1832754995, now seen corresponding path program 1 times [2022-11-02 20:14:47,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:47,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660639333] [2022-11-02 20:14:47,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:47,906 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:47,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:47,907 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:47,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-02 20:14:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:48,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:14:48,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:49,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:49,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:49,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:49,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660639333] [2022-11-02 20:14:49,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660639333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:49,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:49,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:14:49,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010625011] [2022-11-02 20:14:49,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:49,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:14:49,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:49,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:14:49,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:14:49,118 INFO L87 Difference]: Start difference. First operand 507 states and 667 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:14:50,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:50,444 INFO L93 Difference]: Finished difference Result 1840 states and 2618 transitions. [2022-11-02 20:14:50,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:14:50,445 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:50,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:50,448 INFO L225 Difference]: With dead ends: 1840 [2022-11-02 20:14:50,448 INFO L226 Difference]: Without dead ends: 1537 [2022-11-02 20:14:50,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:14:50,450 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 3014 mSDsluCounter, 3164 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3014 SdHoareTripleChecker+Valid, 3645 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:50,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3014 Valid, 3645 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:14:50,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2022-11-02 20:14:50,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 509. [2022-11-02 20:14:50,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 508 states have (on average 1.3169291338582678) internal successors, (669), 508 states have internal predecessors, (669), 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) [2022-11-02 20:14:50,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 669 transitions. [2022-11-02 20:14:50,468 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 669 transitions. Word has length 182 [2022-11-02 20:14:50,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:50,469 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 669 transitions. [2022-11-02 20:14:50,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:14:50,469 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 669 transitions. [2022-11-02 20:14:50,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:50,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:50,471 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:50,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (61)] Ended with exit code 0 [2022-11-02 20:14:50,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:50,686 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:50,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:50,687 INFO L85 PathProgramCache]: Analyzing trace with hash 90473039, now seen corresponding path program 1 times [2022-11-02 20:14:50,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:50,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643348526] [2022-11-02 20:14:50,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:50,688 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:50,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:50,689 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:50,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-02 20:14:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:51,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:14:51,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:51,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:51,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:51,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643348526] [2022-11-02 20:14:51,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643348526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:51,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:51,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:14:51,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92103028] [2022-11-02 20:14:51,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:51,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:14:51,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:51,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:14:51,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:14:51,933 INFO L87 Difference]: Start difference. First operand 509 states and 669 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:14:53,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:53,436 INFO L93 Difference]: Finished difference Result 1850 states and 2629 transitions. [2022-11-02 20:14:53,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:14:53,436 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:53,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:53,439 INFO L225 Difference]: With dead ends: 1850 [2022-11-02 20:14:53,439 INFO L226 Difference]: Without dead ends: 1545 [2022-11-02 20:14:53,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:14:53,440 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 3011 mSDsluCounter, 3177 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3011 SdHoareTripleChecker+Valid, 3663 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:53,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3011 Valid, 3663 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:14:53,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2022-11-02 20:14:53,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 511. [2022-11-02 20:14:53,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 510 states have (on average 1.315686274509804) internal successors, (671), 510 states have internal predecessors, (671), 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) [2022-11-02 20:14:53,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 671 transitions. [2022-11-02 20:14:53,457 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 671 transitions. Word has length 182 [2022-11-02 20:14:53,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:53,458 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 671 transitions. [2022-11-02 20:14:53,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:14:53,458 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 671 transitions. [2022-11-02 20:14:53,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:53,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:53,460 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:53,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:53,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:53,681 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:53,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:53,681 INFO L85 PathProgramCache]: Analyzing trace with hash 231021649, now seen corresponding path program 1 times [2022-11-02 20:14:53,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:53,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290479969] [2022-11-02 20:14:53,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:53,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:53,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:53,685 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:53,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2022-11-02 20:14:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:54,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:14:54,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:54,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:54,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:54,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:54,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290479969] [2022-11-02 20:14:54,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290479969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:54,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:54,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:14:54,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449212714] [2022-11-02 20:14:54,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:54,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:14:54,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:54,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:14:54,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:14:54,956 INFO L87 Difference]: Start difference. First operand 511 states and 671 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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) [2022-11-02 20:14:56,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:56,068 INFO L93 Difference]: Finished difference Result 1702 states and 2409 transitions. [2022-11-02 20:14:56,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:14:56,068 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:56,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:56,071 INFO L225 Difference]: With dead ends: 1702 [2022-11-02 20:14:56,072 INFO L226 Difference]: Without dead ends: 1395 [2022-11-02 20:14:56,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:14:56,073 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 2698 mSDsluCounter, 2515 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2698 SdHoareTripleChecker+Valid, 3006 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:56,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2698 Valid, 3006 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:14:56,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2022-11-02 20:14:56,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 513. [2022-11-02 20:14:56,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 512 states have (on average 1.314453125) internal successors, (673), 512 states have internal predecessors, (673), 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) [2022-11-02 20:14:56,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 673 transitions. [2022-11-02 20:14:56,090 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 673 transitions. Word has length 182 [2022-11-02 20:14:56,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:56,091 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 673 transitions. [2022-11-02 20:14:56,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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) [2022-11-02 20:14:56,091 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 673 transitions. [2022-11-02 20:14:56,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:56,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:56,093 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:56,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (63)] Ended with exit code 0 [2022-11-02 20:14:56,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:56,314 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:56,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:56,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1574416685, now seen corresponding path program 1 times [2022-11-02 20:14:56,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:56,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528355276] [2022-11-02 20:14:56,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:56,317 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:56,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:56,319 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:56,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-02 20:14:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:56,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:14:56,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:57,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:57,607 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:57,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528355276] [2022-11-02 20:14:57,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528355276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:57,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:57,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:14:57,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644282596] [2022-11-02 20:14:57,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:57,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:14:57,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:57,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:14:57,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:14:57,610 INFO L87 Difference]: Start difference. First operand 513 states and 673 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:14:58,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:58,942 INFO L93 Difference]: Finished difference Result 1840 states and 2611 transitions. [2022-11-02 20:14:58,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:14:58,942 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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 182 [2022-11-02 20:14:58,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:58,945 INFO L225 Difference]: With dead ends: 1840 [2022-11-02 20:14:58,945 INFO L226 Difference]: Without dead ends: 1531 [2022-11-02 20:14:58,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:14:58,947 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 2985 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2985 SdHoareTripleChecker+Valid, 3694 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:58,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2985 Valid, 3694 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:14:58,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2022-11-02 20:14:58,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 515. [2022-11-02 20:14:58,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 1.3132295719844358) internal successors, (675), 514 states have internal predecessors, (675), 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) [2022-11-02 20:14:58,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 675 transitions. [2022-11-02 20:14:58,961 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 675 transitions. Word has length 182 [2022-11-02 20:14:58,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:58,961 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 675 transitions. [2022-11-02 20:14:58,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:14:58,962 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 675 transitions. [2022-11-02 20:14:58,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:14:58,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:58,963 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:58,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (64)] Ended with exit code 0 [2022-11-02 20:14:59,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:59,183 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:59,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:59,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1151714859, now seen corresponding path program 1 times [2022-11-02 20:14:59,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:59,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411314034] [2022-11-02 20:14:59,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:59,184 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:59,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:59,187 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:59,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-02 20:14:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:59,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:14:59,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:00,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:00,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:00,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:00,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411314034] [2022-11-02 20:15:00,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411314034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:00,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:00,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:15:00,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142673732] [2022-11-02 20:15:00,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:00,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:15:00,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:00,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:15:00,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:15:00,404 INFO L87 Difference]: Start difference. First operand 515 states and 675 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:15:01,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:01,737 INFO L93 Difference]: Finished difference Result 1850 states and 2622 transitions. [2022-11-02 20:15:01,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:15:01,737 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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 182 [2022-11-02 20:15:01,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:01,740 INFO L225 Difference]: With dead ends: 1850 [2022-11-02 20:15:01,740 INFO L226 Difference]: Without dead ends: 1539 [2022-11-02 20:15:01,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:15:01,742 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 2982 mSDsluCounter, 3211 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2982 SdHoareTripleChecker+Valid, 3712 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:01,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2982 Valid, 3712 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:15:01,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2022-11-02 20:15:01,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 517. [2022-11-02 20:15:01,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 1.312015503875969) internal successors, (677), 516 states have internal predecessors, (677), 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) [2022-11-02 20:15:01,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 677 transitions. [2022-11-02 20:15:01,760 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 677 transitions. Word has length 182 [2022-11-02 20:15:01,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:01,760 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 677 transitions. [2022-11-02 20:15:01,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:15:01,761 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 677 transitions. [2022-11-02 20:15:01,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:15:01,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:01,763 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:01,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:01,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:01,978 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:01,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:01,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1454308695, now seen corresponding path program 1 times [2022-11-02 20:15:01,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:01,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044286307] [2022-11-02 20:15:01,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:01,980 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:01,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:01,981 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:01,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2022-11-02 20:15:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:02,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:15:02,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:03,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:03,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:03,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:03,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044286307] [2022-11-02 20:15:03,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044286307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:03,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:03,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:15:03,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431131032] [2022-11-02 20:15:03,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:03,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:15:03,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:03,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:15:03,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:15:03,219 INFO L87 Difference]: Start difference. First operand 517 states and 677 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:15:04,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:04,567 INFO L93 Difference]: Finished difference Result 1860 states and 2633 transitions. [2022-11-02 20:15:04,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:15:04,567 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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 182 [2022-11-02 20:15:04,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:04,569 INFO L225 Difference]: With dead ends: 1860 [2022-11-02 20:15:04,569 INFO L226 Difference]: Without dead ends: 1547 [2022-11-02 20:15:04,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:15:04,575 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 2979 mSDsluCounter, 3224 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2979 SdHoareTripleChecker+Valid, 3730 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:04,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2979 Valid, 3730 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:15:04,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2022-11-02 20:15:04,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 519. [2022-11-02 20:15:04,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.3108108108108107) internal successors, (679), 518 states have internal predecessors, (679), 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) [2022-11-02 20:15:04,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 679 transitions. [2022-11-02 20:15:04,597 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 679 transitions. Word has length 182 [2022-11-02 20:15:04,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:04,597 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 679 transitions. [2022-11-02 20:15:04,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:15:04,598 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 679 transitions. [2022-11-02 20:15:04,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:15:04,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:04,599 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:04,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:04,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:04,821 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:04,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:04,821 INFO L85 PathProgramCache]: Analyzing trace with hash -134039207, now seen corresponding path program 1 times [2022-11-02 20:15:04,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:04,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124058493] [2022-11-02 20:15:04,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:04,823 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:04,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:04,824 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:04,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-02 20:15:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:05,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:15:05,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:06,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:06,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:06,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124058493] [2022-11-02 20:15:06,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [124058493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:06,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:06,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:15:06,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25569140] [2022-11-02 20:15:06,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:06,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:15:06,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:06,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:15:06,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:15:06,203 INFO L87 Difference]: Start difference. First operand 519 states and 679 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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) [2022-11-02 20:15:07,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:07,320 INFO L93 Difference]: Finished difference Result 1720 states and 2424 transitions. [2022-11-02 20:15:07,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:15:07,321 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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 182 [2022-11-02 20:15:07,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:07,322 INFO L225 Difference]: With dead ends: 1720 [2022-11-02 20:15:07,322 INFO L226 Difference]: Without dead ends: 1405 [2022-11-02 20:15:07,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:15:07,324 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 2672 mSDsluCounter, 2567 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2672 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:07,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2672 Valid, 3084 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:15:07,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2022-11-02 20:15:07,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 523. [2022-11-02 20:15:07,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 522 states have (on average 1.3103448275862069) internal successors, (684), 522 states have internal predecessors, (684), 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) [2022-11-02 20:15:07,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 684 transitions. [2022-11-02 20:15:07,340 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 684 transitions. Word has length 182 [2022-11-02 20:15:07,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:07,340 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 684 transitions. [2022-11-02 20:15:07,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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) [2022-11-02 20:15:07,340 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 684 transitions. [2022-11-02 20:15:07,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:15:07,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:07,342 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:07,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2022-11-02 20:15:07,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:07,542 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:07,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:07,543 INFO L85 PathProgramCache]: Analyzing trace with hash -720845221, now seen corresponding path program 1 times [2022-11-02 20:15:07,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:07,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843346606] [2022-11-02 20:15:07,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:07,544 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:07,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:07,545 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:07,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2022-11-02 20:15:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:08,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:15:08,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:08,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:08,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:08,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:08,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [843346606] [2022-11-02 20:15:08,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [843346606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:08,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:08,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:15:08,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493934331] [2022-11-02 20:15:08,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:08,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:15:08,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:08,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:15:08,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:15:08,744 INFO L87 Difference]: Start difference. First operand 523 states and 684 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:15:10,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:10,051 INFO L93 Difference]: Finished difference Result 1860 states and 2629 transitions. [2022-11-02 20:15:10,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:15:10,051 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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 182 [2022-11-02 20:15:10,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:10,053 INFO L225 Difference]: With dead ends: 1860 [2022-11-02 20:15:10,053 INFO L226 Difference]: Without dead ends: 1541 [2022-11-02 20:15:10,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:15:10,055 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 2955 mSDsluCounter, 3260 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2955 SdHoareTripleChecker+Valid, 3782 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:10,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2955 Valid, 3782 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:15:10,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2022-11-02 20:15:10,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 525. [2022-11-02 20:15:10,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 524 states have (on average 1.3091603053435115) internal successors, (686), 524 states have internal predecessors, (686), 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) [2022-11-02 20:15:10,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 686 transitions. [2022-11-02 20:15:10,068 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 686 transitions. Word has length 182 [2022-11-02 20:15:10,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:10,068 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 686 transitions. [2022-11-02 20:15:10,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:15:10,068 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 686 transitions. [2022-11-02 20:15:10,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:15:10,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:10,070 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:10,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (68)] Ended with exit code 0 [2022-11-02 20:15:10,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:10,270 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:10,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:10,271 INFO L85 PathProgramCache]: Analyzing trace with hash -19780643, now seen corresponding path program 1 times [2022-11-02 20:15:10,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:10,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106758013] [2022-11-02 20:15:10,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:10,272 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:10,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:10,273 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:10,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-02 20:15:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:10,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:15:10,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:11,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:11,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:11,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:11,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106758013] [2022-11-02 20:15:11,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106758013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:11,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:11,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:15:11,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665700181] [2022-11-02 20:15:11,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:11,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:15:11,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:11,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:15:11,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:15:11,470 INFO L87 Difference]: Start difference. First operand 525 states and 686 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:15:12,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:12,753 INFO L93 Difference]: Finished difference Result 1870 states and 2640 transitions. [2022-11-02 20:15:12,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:15:12,753 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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 182 [2022-11-02 20:15:12,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:12,755 INFO L225 Difference]: With dead ends: 1870 [2022-11-02 20:15:12,755 INFO L226 Difference]: Without dead ends: 1549 [2022-11-02 20:15:12,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:15:12,756 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 2952 mSDsluCounter, 3273 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 3800 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:12,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2952 Valid, 3800 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:15:12,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2022-11-02 20:15:12,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 527. [2022-11-02 20:15:12,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 1.3079847908745248) internal successors, (688), 526 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:12,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 688 transitions. [2022-11-02 20:15:12,767 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 688 transitions. Word has length 182 [2022-11-02 20:15:12,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:12,767 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 688 transitions. [2022-11-02 20:15:12,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:15:12,768 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 688 transitions. [2022-11-02 20:15:12,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:15:12,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:12,769 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:12,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:12,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:12,970 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:12,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:12,971 INFO L85 PathProgramCache]: Analyzing trace with hash 660277727, now seen corresponding path program 1 times [2022-11-02 20:15:12,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:12,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468118713] [2022-11-02 20:15:12,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:12,972 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:12,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:12,973 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:12,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2022-11-02 20:15:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:13,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:15:13,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:14,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:14,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:14,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:14,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468118713] [2022-11-02 20:15:14,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468118713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:14,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:14,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:15:14,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821205462] [2022-11-02 20:15:14,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:14,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:15:14,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:14,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:15:14,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:15:14,140 INFO L87 Difference]: Start difference. First operand 527 states and 688 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:15:15,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:15,478 INFO L93 Difference]: Finished difference Result 1880 states and 2651 transitions. [2022-11-02 20:15:15,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:15:15,478 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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 182 [2022-11-02 20:15:15,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:15,480 INFO L225 Difference]: With dead ends: 1880 [2022-11-02 20:15:15,480 INFO L226 Difference]: Without dead ends: 1557 [2022-11-02 20:15:15,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:15:15,482 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 2949 mSDsluCounter, 3286 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2949 SdHoareTripleChecker+Valid, 3818 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:15,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2949 Valid, 3818 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:15:15,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2022-11-02 20:15:15,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 529. [2022-11-02 20:15:15,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 528 states have (on average 1.3068181818181819) internal successors, (690), 528 states have internal predecessors, (690), 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) [2022-11-02 20:15:15,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 690 transitions. [2022-11-02 20:15:15,499 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 690 transitions. Word has length 182 [2022-11-02 20:15:15,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:15,500 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 690 transitions. [2022-11-02 20:15:15,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:15:15,500 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 690 transitions. [2022-11-02 20:15:15,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:15:15,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:15,501 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:15,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:15,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:15,714 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:15,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:15,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1859682207, now seen corresponding path program 1 times [2022-11-02 20:15:15,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:15,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478821927] [2022-11-02 20:15:15,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:15,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:15,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:15,717 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:15,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-02 20:15:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:16,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:15:16,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:16,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:16,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:16,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:16,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478821927] [2022-11-02 20:15:16,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478821927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:16,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:16,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:15:16,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516905151] [2022-11-02 20:15:16,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:16,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:15:16,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:16,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:15:16,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:15:16,911 INFO L87 Difference]: Start difference. First operand 529 states and 690 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:15:18,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:18,210 INFO L93 Difference]: Finished difference Result 1890 states and 2662 transitions. [2022-11-02 20:15:18,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:15:18,210 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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 182 [2022-11-02 20:15:18,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:18,211 INFO L225 Difference]: With dead ends: 1890 [2022-11-02 20:15:18,211 INFO L226 Difference]: Without dead ends: 1565 [2022-11-02 20:15:18,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:15:18,212 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 2946 mSDsluCounter, 3299 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2946 SdHoareTripleChecker+Valid, 3836 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:18,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2946 Valid, 3836 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:15:18,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2022-11-02 20:15:18,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 531. [2022-11-02 20:15:18,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 1.3056603773584905) internal successors, (692), 530 states have internal predecessors, (692), 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) [2022-11-02 20:15:18,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 692 transitions. [2022-11-02 20:15:18,226 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 692 transitions. Word has length 182 [2022-11-02 20:15:18,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:18,227 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 692 transitions. [2022-11-02 20:15:18,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 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) [2022-11-02 20:15:18,227 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 692 transitions. [2022-11-02 20:15:18,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:15:18,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:18,228 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:18,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:18,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:18,434 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:18,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:18,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1857835165, now seen corresponding path program 1 times [2022-11-02 20:15:18,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:18,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936907372] [2022-11-02 20:15:18,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:18,437 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:18,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:18,439 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:18,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2022-11-02 20:15:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:18,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 20:15:18,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:20,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:20,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:15:21,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:21,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:21,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936907372] [2022-11-02 20:15:21,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936907372] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:15:21,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:15:21,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 20:15:21,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373032105] [2022-11-02 20:15:21,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:15:21,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:15:21,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:21,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:15:21,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:15:21,346 INFO L87 Difference]: Start difference. First operand 531 states and 692 transitions. Second operand has 14 states, 14 states have (on average 25.857142857142858) internal successors, (362), 14 states have internal predecessors, (362), 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) [2022-11-02 20:15:21,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:21,909 INFO L93 Difference]: Finished difference Result 1241 states and 1615 transitions. [2022-11-02 20:15:21,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:15:21,910 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 25.857142857142858) internal successors, (362), 14 states have internal predecessors, (362), 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 182 [2022-11-02 20:15:21,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:21,911 INFO L225 Difference]: With dead ends: 1241 [2022-11-02 20:15:21,912 INFO L226 Difference]: Without dead ends: 1239 [2022-11-02 20:15:21,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:15:21,913 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 1875 mSDsluCounter, 3026 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1875 SdHoareTripleChecker+Valid, 3435 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 430 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:21,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1875 Valid, 3435 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 150 Invalid, 0 Unknown, 430 Unchecked, 0.4s Time] [2022-11-02 20:15:21,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-11-02 20:15:21,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 822. [2022-11-02 20:15:21,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 821 states have (on average 1.2545676004872106) internal successors, (1030), 821 states have internal predecessors, (1030), 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) [2022-11-02 20:15:21,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1030 transitions. [2022-11-02 20:15:21,936 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1030 transitions. Word has length 182 [2022-11-02 20:15:21,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:21,936 INFO L495 AbstractCegarLoop]: Abstraction has 822 states and 1030 transitions. [2022-11-02 20:15:21,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 25.857142857142858) internal successors, (362), 14 states have internal predecessors, (362), 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) [2022-11-02 20:15:21,937 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1030 transitions. [2022-11-02 20:15:21,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:15:21,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:21,939 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:21,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:22,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:22,154 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:22,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:22,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1877376287, now seen corresponding path program 1 times [2022-11-02 20:15:22,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:22,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995286405] [2022-11-02 20:15:22,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:22,156 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:22,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:22,157 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:22,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2022-11-02 20:15:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:22,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:15:22,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:22,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:22,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:22,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:22,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995286405] [2022-11-02 20:15:22,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995286405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:22,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:22,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:15:22,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458562046] [2022-11-02 20:15:22,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:22,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:15:22,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:22,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:15:22,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:15:22,701 INFO L87 Difference]: Start difference. First operand 822 states and 1030 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2022-11-02 20:15:22,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:22,884 INFO L93 Difference]: Finished difference Result 1475 states and 1960 transitions. [2022-11-02 20:15:22,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:15:22,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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 182 [2022-11-02 20:15:22,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:22,886 INFO L225 Difference]: With dead ends: 1475 [2022-11-02 20:15:22,886 INFO L226 Difference]: Without dead ends: 952 [2022-11-02 20:15:22,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:15:22,887 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 680 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:22,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 765 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:15:22,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2022-11-02 20:15:22,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 626. [2022-11-02 20:15:22,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 625 states have (on average 1.3008) internal successors, (813), 625 states have internal predecessors, (813), 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) [2022-11-02 20:15:22,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 813 transitions. [2022-11-02 20:15:22,907 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 813 transitions. Word has length 182 [2022-11-02 20:15:22,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:22,908 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 813 transitions. [2022-11-02 20:15:22,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2022-11-02 20:15:22,908 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 813 transitions. [2022-11-02 20:15:22,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:15:22,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:22,911 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:22,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (73)] Ended with exit code 0 [2022-11-02 20:15:23,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:23,126 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:23,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:23,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1402195779, now seen corresponding path program 1 times [2022-11-02 20:15:23,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:23,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391833471] [2022-11-02 20:15:23,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:23,129 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:23,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:23,130 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:23,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2022-11-02 20:15:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:23,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:15:23,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:25,026 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 177 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:25,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:15:25,528 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 177 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:25,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:25,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391833471] [2022-11-02 20:15:25,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391833471] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:15:25,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:15:25,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-02 20:15:25,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279634061] [2022-11-02 20:15:25,530 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:15:25,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:15:25,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:25,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:15:25,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:15:25,532 INFO L87 Difference]: Start difference. First operand 626 states and 813 transitions. Second operand has 13 states, 13 states have (on average 41.53846153846154) internal successors, (540), 13 states have internal predecessors, (540), 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) [2022-11-02 20:15:26,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:26,883 INFO L93 Difference]: Finished difference Result 2550 states and 3477 transitions. [2022-11-02 20:15:26,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:15:26,883 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 41.53846153846154) internal successors, (540), 13 states have internal predecessors, (540), 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 359 [2022-11-02 20:15:26,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:26,886 INFO L225 Difference]: With dead ends: 2550 [2022-11-02 20:15:26,886 INFO L226 Difference]: Without dead ends: 2223 [2022-11-02 20:15:26,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 705 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=671, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:15:26,888 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 4324 mSDsluCounter, 3078 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4324 SdHoareTripleChecker+Valid, 3705 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:26,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4324 Valid, 3705 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:15:26,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2022-11-02 20:15:26,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 953. [2022-11-02 20:15:26,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 952 states have (on average 1.343487394957983) internal successors, (1279), 952 states have internal predecessors, (1279), 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) [2022-11-02 20:15:26,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1279 transitions. [2022-11-02 20:15:26,927 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1279 transitions. Word has length 359 [2022-11-02 20:15:26,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:26,928 INFO L495 AbstractCegarLoop]: Abstraction has 953 states and 1279 transitions. [2022-11-02 20:15:26,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.53846153846154) internal successors, (540), 13 states have internal predecessors, (540), 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) [2022-11-02 20:15:26,928 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1279 transitions. [2022-11-02 20:15:26,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:15:26,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:26,932 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:26,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (74)] Ended with exit code 0 [2022-11-02 20:15:27,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:27,146 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:27,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:27,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1293622459, now seen corresponding path program 1 times [2022-11-02 20:15:27,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:27,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517102922] [2022-11-02 20:15:27,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:27,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:27,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:27,151 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:27,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2022-11-02 20:15:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:28,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:15:28,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 171 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:15:28,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:15:30,129 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 171 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:15:30,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:30,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517102922] [2022-11-02 20:15:30,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517102922] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:15:30,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:15:30,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-02 20:15:30,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578607315] [2022-11-02 20:15:30,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:15:30,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:15:30,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:30,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:15:30,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:15:30,132 INFO L87 Difference]: Start difference. First operand 953 states and 1279 transitions. Second operand has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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) [2022-11-02 20:15:30,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:30,400 INFO L93 Difference]: Finished difference Result 2892 states and 4042 transitions. [2022-11-02 20:15:30,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:15:30,401 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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 359 [2022-11-02 20:15:30,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:30,403 INFO L225 Difference]: With dead ends: 2892 [2022-11-02 20:15:30,403 INFO L226 Difference]: Without dead ends: 2246 [2022-11-02 20:15:30,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 710 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:15:30,405 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1976 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1976 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:30,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1976 Valid, 1070 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:15:30,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2022-11-02 20:15:30,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 957. [2022-11-02 20:15:30,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 1.3420502092050208) internal successors, (1283), 956 states have internal predecessors, (1283), 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) [2022-11-02 20:15:30,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1283 transitions. [2022-11-02 20:15:30,438 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1283 transitions. Word has length 359 [2022-11-02 20:15:30,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:30,439 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 1283 transitions. [2022-11-02 20:15:30,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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) [2022-11-02 20:15:30,439 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1283 transitions. [2022-11-02 20:15:30,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:15:30,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:30,443 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:30,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:30,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:30,654 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:30,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:30,654 INFO L85 PathProgramCache]: Analyzing trace with hash -645029689, now seen corresponding path program 1 times [2022-11-02 20:15:30,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:30,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050142084] [2022-11-02 20:15:30,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:30,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:30,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:30,658 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:30,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2022-11-02 20:15:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:31,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:15:31,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:32,412 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 169 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:15:32,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:15:33,689 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 169 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:15:33,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:33,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050142084] [2022-11-02 20:15:33,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050142084] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:15:33,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:15:33,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-02 20:15:33,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388481393] [2022-11-02 20:15:33,691 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:15:33,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:15:33,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:33,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:15:33,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:15:33,693 INFO L87 Difference]: Start difference. First operand 957 states and 1283 transitions. Second operand has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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) [2022-11-02 20:15:33,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:33,938 INFO L93 Difference]: Finished difference Result 2892 states and 4038 transitions. [2022-11-02 20:15:33,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:15:33,938 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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 359 [2022-11-02 20:15:33,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:33,941 INFO L225 Difference]: With dead ends: 2892 [2022-11-02 20:15:33,941 INFO L226 Difference]: Without dead ends: 2246 [2022-11-02 20:15:33,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 710 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:15:33,942 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 1970 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1970 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:33,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1970 Valid, 1069 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:15:33,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2022-11-02 20:15:33,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 961. [2022-11-02 20:15:33,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 960 states have (on average 1.340625) internal successors, (1287), 960 states have internal predecessors, (1287), 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) [2022-11-02 20:15:33,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1287 transitions. [2022-11-02 20:15:33,977 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1287 transitions. Word has length 359 [2022-11-02 20:15:33,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:33,978 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1287 transitions. [2022-11-02 20:15:33,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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) [2022-11-02 20:15:33,978 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1287 transitions. [2022-11-02 20:15:33,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:15:33,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:33,982 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:34,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:34,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:34,200 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:34,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:34,201 INFO L85 PathProgramCache]: Analyzing trace with hash -554969399, now seen corresponding path program 1 times [2022-11-02 20:15:34,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:34,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212576318] [2022-11-02 20:15:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:34,203 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:34,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:34,204 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:34,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2022-11-02 20:15:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:34,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:15:35,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:35,853 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 167 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:15:35,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:15:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 167 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:15:37,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:37,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212576318] [2022-11-02 20:15:37,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212576318] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:15:37,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:15:37,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-02 20:15:37,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935284541] [2022-11-02 20:15:37,042 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:15:37,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:15:37,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:37,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:15:37,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:15:37,044 INFO L87 Difference]: Start difference. First operand 961 states and 1287 transitions. Second operand has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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) [2022-11-02 20:15:37,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:37,442 INFO L93 Difference]: Finished difference Result 2892 states and 4034 transitions. [2022-11-02 20:15:37,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:15:37,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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 359 [2022-11-02 20:15:37,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:37,445 INFO L225 Difference]: With dead ends: 2892 [2022-11-02 20:15:37,445 INFO L226 Difference]: Without dead ends: 2246 [2022-11-02 20:15:37,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 710 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:15:37,447 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 1267 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:37,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1267 Valid, 1037 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:15:37,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2022-11-02 20:15:37,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 965. [2022-11-02 20:15:37,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 964 states have (on average 1.3392116182572613) internal successors, (1291), 964 states have internal predecessors, (1291), 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) [2022-11-02 20:15:37,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1291 transitions. [2022-11-02 20:15:37,494 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1291 transitions. Word has length 359 [2022-11-02 20:15:37,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:37,495 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1291 transitions. [2022-11-02 20:15:37,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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) [2022-11-02 20:15:37,495 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1291 transitions. [2022-11-02 20:15:37,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:15:37,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:37,500 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:37,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:37,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:37,714 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:37,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:37,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1962695349, now seen corresponding path program 1 times [2022-11-02 20:15:37,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:37,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870892975] [2022-11-02 20:15:37,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:37,717 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:37,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:37,719 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:37,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2022-11-02 20:15:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:38,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:15:38,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:39,357 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 165 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:15:39,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:15:40,514 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 165 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:15:40,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:40,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870892975] [2022-11-02 20:15:40,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870892975] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:15:40,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:15:40,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-02 20:15:40,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164281907] [2022-11-02 20:15:40,516 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:15:40,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:15:40,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:40,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:15:40,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:15:40,518 INFO L87 Difference]: Start difference. First operand 965 states and 1291 transitions. Second operand has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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) [2022-11-02 20:15:40,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:40,813 INFO L93 Difference]: Finished difference Result 2892 states and 4030 transitions. [2022-11-02 20:15:40,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:15:40,813 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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 359 [2022-11-02 20:15:40,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:40,816 INFO L225 Difference]: With dead ends: 2892 [2022-11-02 20:15:40,816 INFO L226 Difference]: Without dead ends: 2246 [2022-11-02 20:15:40,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 710 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:15:40,817 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1263 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:40,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1263 Valid, 1072 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:15:40,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2022-11-02 20:15:40,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 969. [2022-11-02 20:15:40,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 968 states have (on average 1.337809917355372) internal successors, (1295), 968 states have internal predecessors, (1295), 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) [2022-11-02 20:15:40,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1295 transitions. [2022-11-02 20:15:40,851 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1295 transitions. Word has length 359 [2022-11-02 20:15:40,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:40,852 INFO L495 AbstractCegarLoop]: Abstraction has 969 states and 1295 transitions. [2022-11-02 20:15:40,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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) [2022-11-02 20:15:40,852 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1295 transitions. [2022-11-02 20:15:40,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:15:40,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:40,856 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:40,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:41,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:41,070 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:41,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:41,071 INFO L85 PathProgramCache]: Analyzing trace with hash 409021517, now seen corresponding path program 1 times [2022-11-02 20:15:41,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:41,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852323517] [2022-11-02 20:15:41,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:41,074 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:41,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:41,075 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:41,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2022-11-02 20:15:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:41,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:15:41,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:42,673 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 163 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:15:42,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:15:43,885 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 163 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:15:43,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:43,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852323517] [2022-11-02 20:15:43,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852323517] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:15:43,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:15:43,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-02 20:15:43,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535100852] [2022-11-02 20:15:43,886 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:15:43,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:15:43,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:43,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:15:43,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:15:43,888 INFO L87 Difference]: Start difference. First operand 969 states and 1295 transitions. Second operand has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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) [2022-11-02 20:15:44,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:44,164 INFO L93 Difference]: Finished difference Result 2892 states and 4026 transitions. [2022-11-02 20:15:44,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:15:44,164 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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 359 [2022-11-02 20:15:44,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:44,167 INFO L225 Difference]: With dead ends: 2892 [2022-11-02 20:15:44,167 INFO L226 Difference]: Without dead ends: 2246 [2022-11-02 20:15:44,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 710 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:15:44,168 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 1434 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:44,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1434 Valid, 1082 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:15:44,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2022-11-02 20:15:44,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 973. [2022-11-02 20:15:44,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 972 states have (on average 1.3364197530864197) internal successors, (1299), 972 states have internal predecessors, (1299), 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) [2022-11-02 20:15:44,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1299 transitions. [2022-11-02 20:15:44,194 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1299 transitions. Word has length 359 [2022-11-02 20:15:44,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:44,194 INFO L495 AbstractCegarLoop]: Abstraction has 973 states and 1299 transitions. [2022-11-02 20:15:44,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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) [2022-11-02 20:15:44,195 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1299 transitions. [2022-11-02 20:15:44,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:15:44,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:44,197 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:44,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (79)] Ended with exit code 0 [2022-11-02 20:15:44,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:44,398 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:44,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:44,399 INFO L85 PathProgramCache]: Analyzing trace with hash 907578319, now seen corresponding path program 1 times [2022-11-02 20:15:44,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:44,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765006586] [2022-11-02 20:15:44,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:44,401 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:44,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:44,402 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:44,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2022-11-02 20:15:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:45,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:15:45,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 159 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:15:46,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:15:47,134 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 159 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:15:47,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:47,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765006586] [2022-11-02 20:15:47,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765006586] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:15:47,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:15:47,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-02 20:15:47,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510031609] [2022-11-02 20:15:47,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:15:47,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:15:47,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:47,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:15:47,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:15:47,139 INFO L87 Difference]: Start difference. First operand 973 states and 1299 transitions. Second operand has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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) [2022-11-02 20:15:47,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:47,394 INFO L93 Difference]: Finished difference Result 3197 states and 4380 transitions. [2022-11-02 20:15:47,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:15:47,395 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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 359 [2022-11-02 20:15:47,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:47,398 INFO L225 Difference]: With dead ends: 3197 [2022-11-02 20:15:47,398 INFO L226 Difference]: Without dead ends: 2553 [2022-11-02 20:15:47,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 710 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:15:47,399 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 1010 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:47,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 1483 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:15:47,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2022-11-02 20:15:47,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 981. [2022-11-02 20:15:47,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 1.3357142857142856) internal successors, (1309), 980 states have internal predecessors, (1309), 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) [2022-11-02 20:15:47,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1309 transitions. [2022-11-02 20:15:47,435 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1309 transitions. Word has length 359 [2022-11-02 20:15:47,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:47,436 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1309 transitions. [2022-11-02 20:15:47,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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) [2022-11-02 20:15:47,436 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1309 transitions. [2022-11-02 20:15:47,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:15:47,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:47,440 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:47,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (80)] Ended with exit code 0 [2022-11-02 20:15:47,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:47,663 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:47,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:47,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1574960209, now seen corresponding path program 1 times [2022-11-02 20:15:47,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:47,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618387282] [2022-11-02 20:15:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:47,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:47,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:47,666 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:47,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2022-11-02 20:15:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:48,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:15:48,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 155 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 20:15:49,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:15:50,359 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 155 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 20:15:50,359 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:50,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618387282] [2022-11-02 20:15:50,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618387282] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:15:50,359 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:15:50,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-02 20:15:50,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132676547] [2022-11-02 20:15:50,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:15:50,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:15:50,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:50,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:15:50,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:15:50,361 INFO L87 Difference]: Start difference. First operand 981 states and 1309 transitions. Second operand has 8 states, 8 states have (on average 65.375) internal successors, (523), 8 states have internal predecessors, (523), 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) [2022-11-02 20:15:50,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:50,710 INFO L93 Difference]: Finished difference Result 2914 states and 4045 transitions. [2022-11-02 20:15:50,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:15:50,710 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 65.375) internal successors, (523), 8 states have internal predecessors, (523), 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 359 [2022-11-02 20:15:50,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:50,713 INFO L225 Difference]: With dead ends: 2914 [2022-11-02 20:15:50,713 INFO L226 Difference]: Without dead ends: 2270 [2022-11-02 20:15:50,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 710 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:15:50,715 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1790 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1790 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:50,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1790 Valid, 1076 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:15:50,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2022-11-02 20:15:50,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 985. [2022-11-02 20:15:50,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 984 states have (on average 1.3343495934959348) internal successors, (1313), 984 states have internal predecessors, (1313), 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) [2022-11-02 20:15:50,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1313 transitions. [2022-11-02 20:15:50,762 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1313 transitions. Word has length 359 [2022-11-02 20:15:50,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:50,762 INFO L495 AbstractCegarLoop]: Abstraction has 985 states and 1313 transitions. [2022-11-02 20:15:50,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.375) internal successors, (523), 8 states have internal predecessors, (523), 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) [2022-11-02 20:15:50,762 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1313 transitions. [2022-11-02 20:15:50,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:15:50,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:50,764 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:50,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (81)] Ended with exit code 0 [2022-11-02 20:15:50,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:50,965 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:50,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:50,966 INFO L85 PathProgramCache]: Analyzing trace with hash -194511405, now seen corresponding path program 1 times [2022-11-02 20:15:50,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:50,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456270412] [2022-11-02 20:15:50,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:50,968 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:50,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:50,969 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:50,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2022-11-02 20:15:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:51,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:15:51,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:52,637 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 153 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 20:15:52,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:15:53,870 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 153 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 20:15:53,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:53,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456270412] [2022-11-02 20:15:53,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456270412] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:15:53,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:15:53,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-11-02 20:15:53,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54137805] [2022-11-02 20:15:53,871 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:15:53,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:15:53,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:53,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:15:53,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:15:53,874 INFO L87 Difference]: Start difference. First operand 985 states and 1313 transitions. Second operand has 9 states, 9 states have (on average 58.44444444444444) internal successors, (526), 9 states have internal predecessors, (526), 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) [2022-11-02 20:15:54,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:54,181 INFO L93 Difference]: Finished difference Result 2873 states and 3988 transitions. [2022-11-02 20:15:54,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:15:54,182 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 58.44444444444444) internal successors, (526), 9 states have internal predecessors, (526), 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 359 [2022-11-02 20:15:54,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:54,184 INFO L225 Difference]: With dead ends: 2873 [2022-11-02 20:15:54,184 INFO L226 Difference]: Without dead ends: 2229 [2022-11-02 20:15:54,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:15:54,186 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 1156 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:54,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 1487 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:15:54,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2022-11-02 20:15:54,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 989. [2022-11-02 20:15:54,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 988 states have (on average 1.332995951417004) internal successors, (1317), 988 states have internal predecessors, (1317), 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) [2022-11-02 20:15:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1317 transitions. [2022-11-02 20:15:54,212 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1317 transitions. Word has length 359 [2022-11-02 20:15:54,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:54,213 INFO L495 AbstractCegarLoop]: Abstraction has 989 states and 1317 transitions. [2022-11-02 20:15:54,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.44444444444444) internal successors, (526), 9 states have internal predecessors, (526), 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) [2022-11-02 20:15:54,213 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1317 transitions. [2022-11-02 20:15:54,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:15:54,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:54,215 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:54,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:54,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:54,440 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:54,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:54,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1599703083, now seen corresponding path program 1 times [2022-11-02 20:15:54,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:54,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025685642] [2022-11-02 20:15:54,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:54,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:54,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:54,445 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:54,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2022-11-02 20:15:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:55,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:15:55,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:56,471 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 149 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:15:56,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:15:57,677 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 149 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:15:57,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:57,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025685642] [2022-11-02 20:15:57,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025685642] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:15:57,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:15:57,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:15:57,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943877445] [2022-11-02 20:15:57,679 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:15:57,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:15:57,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:57,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:15:57,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:15:57,681 INFO L87 Difference]: Start difference. First operand 989 states and 1317 transitions. Second operand has 10 states, 10 states have (on average 56.1) internal successors, (561), 10 states have internal predecessors, (561), 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) [2022-11-02 20:15:58,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:58,221 INFO L93 Difference]: Finished difference Result 2871 states and 3981 transitions. [2022-11-02 20:15:58,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:15:58,221 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 56.1) internal successors, (561), 10 states have internal predecessors, (561), 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 359 [2022-11-02 20:15:58,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:58,223 INFO L225 Difference]: With dead ends: 2871 [2022-11-02 20:15:58,223 INFO L226 Difference]: Without dead ends: 2229 [2022-11-02 20:15:58,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:15:58,225 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 2284 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2284 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:58,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2284 Valid, 1126 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:15:58,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2022-11-02 20:15:58,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 997. [2022-11-02 20:15:58,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.3323293172690762) internal successors, (1327), 996 states have internal predecessors, (1327), 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) [2022-11-02 20:15:58,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1327 transitions. [2022-11-02 20:15:58,251 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1327 transitions. Word has length 359 [2022-11-02 20:15:58,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:58,251 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1327 transitions. [2022-11-02 20:15:58,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.1) internal successors, (561), 10 states have internal predecessors, (561), 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) [2022-11-02 20:15:58,252 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1327 transitions. [2022-11-02 20:15:58,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:15:58,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:58,254 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:58,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:58,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:58,455 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:58,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:58,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1213840681, now seen corresponding path program 1 times [2022-11-02 20:15:58,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:58,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190025875] [2022-11-02 20:15:58,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:58,457 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:58,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:58,458 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:58,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2022-11-02 20:15:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:59,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:15:59,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:01,466 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 147 proven. 27 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:16:01,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:05,599 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 147 proven. 27 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:16:05,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:16:05,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190025875] [2022-11-02 20:16:05,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190025875] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:16:05,600 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:16:05,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:16:05,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803105365] [2022-11-02 20:16:05,600 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:05,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:16:05,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:16:05,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:16:05,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:16:05,602 INFO L87 Difference]: Start difference. First operand 997 states and 1327 transitions. Second operand has 10 states, 10 states have (on average 55.1) internal successors, (551), 10 states have internal predecessors, (551), 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) [2022-11-02 20:16:06,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:06,517 INFO L93 Difference]: Finished difference Result 3201 states and 4371 transitions. [2022-11-02 20:16:06,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:16:06,518 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 55.1) internal successors, (551), 10 states have internal predecessors, (551), 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 359 [2022-11-02 20:16:06,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:06,520 INFO L225 Difference]: With dead ends: 3201 [2022-11-02 20:16:06,520 INFO L226 Difference]: Without dead ends: 2557 [2022-11-02 20:16:06,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:16:06,521 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 1468 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:06,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1404 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:16:06,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2557 states. [2022-11-02 20:16:06,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2557 to 1001. [2022-11-02 20:16:06,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 1000 states have (on average 1.331) internal successors, (1331), 1000 states have internal predecessors, (1331), 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) [2022-11-02 20:16:06,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1331 transitions. [2022-11-02 20:16:06,576 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1331 transitions. Word has length 359 [2022-11-02 20:16:06,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:06,577 INFO L495 AbstractCegarLoop]: Abstraction has 1001 states and 1331 transitions. [2022-11-02 20:16:06,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 55.1) internal successors, (551), 10 states have internal predecessors, (551), 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) [2022-11-02 20:16:06,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1331 transitions. [2022-11-02 20:16:06,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:16:06,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:06,580 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:06,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (84)] Ended with exit code 0 [2022-11-02 20:16:06,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:16:06,781 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:16:06,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:06,781 INFO L85 PathProgramCache]: Analyzing trace with hash 717284953, now seen corresponding path program 1 times [2022-11-02 20:16:06,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:16:06,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995129958] [2022-11-02 20:16:06,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:06,783 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:16:06,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:16:06,784 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:16:06,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2022-11-02 20:16:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:07,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:16:07,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:08,632 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 145 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:08,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:09,079 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 145 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:09,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:16:09,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995129958] [2022-11-02 20:16:09,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995129958] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:16:09,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:16:09,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-02 20:16:09,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405084426] [2022-11-02 20:16:09,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:09,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:16:09,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:16:09,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:16:09,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:16:09,083 INFO L87 Difference]: Start difference. First operand 1001 states and 1331 transitions. Second operand has 14 states, 14 states have (on average 38.857142857142854) internal successors, (544), 14 states have internal predecessors, (544), 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) [2022-11-02 20:16:09,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:09,347 INFO L93 Difference]: Finished difference Result 1699 states and 2310 transitions. [2022-11-02 20:16:09,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:16:09,348 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 38.857142857142854) internal successors, (544), 14 states have internal predecessors, (544), 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 359 [2022-11-02 20:16:09,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:09,349 INFO L225 Difference]: With dead ends: 1699 [2022-11-02 20:16:09,349 INFO L226 Difference]: Without dead ends: 1055 [2022-11-02 20:16:09,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:16:09,351 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 182 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 2197 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:09,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 2197 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 67 Unchecked, 0.1s Time] [2022-11-02 20:16:09,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2022-11-02 20:16:09,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 1055. [2022-11-02 20:16:09,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 1054 states have (on average 1.3282732447817838) internal successors, (1400), 1054 states have internal predecessors, (1400), 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) [2022-11-02 20:16:09,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1400 transitions. [2022-11-02 20:16:09,385 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1400 transitions. Word has length 359 [2022-11-02 20:16:09,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:09,386 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1400 transitions. [2022-11-02 20:16:09,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 38.857142857142854) internal successors, (544), 14 states have internal predecessors, (544), 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) [2022-11-02 20:16:09,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1400 transitions. [2022-11-02 20:16:09,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:16:09,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:09,390 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:09,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:09,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:16:09,606 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:16:09,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:09,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1680702885, now seen corresponding path program 1 times [2022-11-02 20:16:09,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:16:09,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704460857] [2022-11-02 20:16:09,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:09,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:16:09,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:16:09,610 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:16:09,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2022-11-02 20:16:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:10,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:16:10,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:10,782 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-02 20:16:10,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:10,807 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-02 20:16:10,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:16:10,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704460857] [2022-11-02 20:16:10,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [704460857] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:16:10,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:16:10,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-11-02 20:16:10,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610388358] [2022-11-02 20:16:10,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:10,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:16:10,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:16:10,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:16:10,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:16:10,809 INFO L87 Difference]: Start difference. First operand 1055 states and 1400 transitions. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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) [2022-11-02 20:16:10,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:10,907 INFO L93 Difference]: Finished difference Result 3348 states and 4554 transitions. [2022-11-02 20:16:10,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:16:10,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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 359 [2022-11-02 20:16:10,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:10,910 INFO L225 Difference]: With dead ends: 3348 [2022-11-02 20:16:10,910 INFO L226 Difference]: Without dead ends: 2708 [2022-11-02 20:16:10,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 713 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:16:10,912 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 1272 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:10,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 992 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:16:10,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2022-11-02 20:16:10,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 1059. [2022-11-02 20:16:10,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 1.3270321361058601) internal successors, (1404), 1058 states have internal predecessors, (1404), 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) [2022-11-02 20:16:10,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1404 transitions. [2022-11-02 20:16:10,937 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1404 transitions. Word has length 359 [2022-11-02 20:16:10,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:10,937 INFO L495 AbstractCegarLoop]: Abstraction has 1059 states and 1404 transitions. [2022-11-02 20:16:10,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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) [2022-11-02 20:16:10,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1404 transitions. [2022-11-02 20:16:10,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:16:10,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:10,940 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:10,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (86)] Ended with exit code 0 [2022-11-02 20:16:11,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:16:11,141 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:16:11,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:11,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1836683427, now seen corresponding path program 1 times [2022-11-02 20:16:11,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:16:11,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999394080] [2022-11-02 20:16:11,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:11,143 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:16:11,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:16:11,144 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:16:11,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2022-11-02 20:16:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:11,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:16:11,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:12,916 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 129 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:12,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 129 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:13,448 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:16:13,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999394080] [2022-11-02 20:16:13,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999394080] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:16:13,449 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:16:13,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 20:16:13,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700048233] [2022-11-02 20:16:13,449 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:13,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:16:13,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:16:13,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:16:13,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:16:13,451 INFO L87 Difference]: Start difference. First operand 1059 states and 1404 transitions. Second operand has 16 states, 16 states have (on average 36.8125) internal successors, (589), 16 states have internal predecessors, (589), 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) [2022-11-02 20:16:14,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:14,467 INFO L93 Difference]: Finished difference Result 2802 states and 3780 transitions. [2022-11-02 20:16:14,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:16:14,468 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 36.8125) internal successors, (589), 16 states have internal predecessors, (589), 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 359 [2022-11-02 20:16:14,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:14,470 INFO L225 Difference]: With dead ends: 2802 [2022-11-02 20:16:14,470 INFO L226 Difference]: Without dead ends: 2172 [2022-11-02 20:16:14,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:16:14,471 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 2162 mSDsluCounter, 4775 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 5495 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:14,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2162 Valid, 5495 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:16:14,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2022-11-02 20:16:14,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1077. [2022-11-02 20:16:14,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 1076 states have (on average 1.3271375464684014) internal successors, (1428), 1076 states have internal predecessors, (1428), 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) [2022-11-02 20:16:14,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1428 transitions. [2022-11-02 20:16:14,507 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1428 transitions. Word has length 359 [2022-11-02 20:16:14,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:14,508 INFO L495 AbstractCegarLoop]: Abstraction has 1077 states and 1428 transitions. [2022-11-02 20:16:14,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 36.8125) internal successors, (589), 16 states have internal predecessors, (589), 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) [2022-11-02 20:16:14,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1428 transitions. [2022-11-02 20:16:14,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:16:14,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:14,510 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:14,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:14,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:16:14,711 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:16:14,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:14,711 INFO L85 PathProgramCache]: Analyzing trace with hash -888631461, now seen corresponding path program 1 times [2022-11-02 20:16:14,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:16:14,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669462572] [2022-11-02 20:16:14,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:14,713 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:16:14,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:16:14,713 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:16:14,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2022-11-02 20:16:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:15,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:16:15,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 127 proven. 31 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 20:16:16,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 127 proven. 31 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 20:16:17,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:16:17,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669462572] [2022-11-02 20:16:17,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669462572] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:16:17,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:16:17,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:16:17,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817208241] [2022-11-02 20:16:17,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:17,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:16:17,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:16:17,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:16:17,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:16:17,301 INFO L87 Difference]: Start difference. First operand 1077 states and 1428 transitions. Second operand has 10 states, 10 states have (on average 52.6) internal successors, (526), 10 states have internal predecessors, (526), 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) [2022-11-02 20:16:17,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:17,681 INFO L93 Difference]: Finished difference Result 3009 states and 4143 transitions. [2022-11-02 20:16:17,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:16:17,682 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 52.6) internal successors, (526), 10 states have internal predecessors, (526), 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 359 [2022-11-02 20:16:17,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:17,683 INFO L225 Difference]: With dead ends: 3009 [2022-11-02 20:16:17,683 INFO L226 Difference]: Without dead ends: 2381 [2022-11-02 20:16:17,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:16:17,684 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 2121 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2121 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:17,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2121 Valid, 1589 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:16:17,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2022-11-02 20:16:17,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 1141. [2022-11-02 20:16:17,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1140 states have (on average 1.3289473684210527) internal successors, (1515), 1140 states have internal predecessors, (1515), 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) [2022-11-02 20:16:17,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1515 transitions. [2022-11-02 20:16:17,707 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1515 transitions. Word has length 359 [2022-11-02 20:16:17,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:17,707 INFO L495 AbstractCegarLoop]: Abstraction has 1141 states and 1515 transitions. [2022-11-02 20:16:17,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 52.6) internal successors, (526), 10 states have internal predecessors, (526), 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) [2022-11-02 20:16:17,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1515 transitions. [2022-11-02 20:16:17,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:16:17,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:17,711 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:17,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (88)] Ended with exit code 0 [2022-11-02 20:16:17,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:16:17,911 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:16:17,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:17,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1323137059, now seen corresponding path program 1 times [2022-11-02 20:16:17,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:16:17,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [681078744] [2022-11-02 20:16:17,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:17,913 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:16:17,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:16:17,914 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:16:17,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2022-11-02 20:16:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:18,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:16:18,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:19,593 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 123 proven. 57 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:16:19,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:20,650 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 123 proven. 57 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:16:20,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:16:20,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [681078744] [2022-11-02 20:16:20,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [681078744] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:16:20,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:16:20,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:16:20,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217493622] [2022-11-02 20:16:20,651 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:20,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:16:20,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:16:20,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:16:20,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:16:20,653 INFO L87 Difference]: Start difference. First operand 1141 states and 1515 transitions. Second operand has 10 states, 10 states have (on average 56.1) internal successors, (561), 10 states have internal predecessors, (561), 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) [2022-11-02 20:16:21,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:21,066 INFO L93 Difference]: Finished difference Result 2979 states and 4103 transitions. [2022-11-02 20:16:21,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:16:21,067 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 56.1) internal successors, (561), 10 states have internal predecessors, (561), 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 359 [2022-11-02 20:16:21,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:21,069 INFO L225 Difference]: With dead ends: 2979 [2022-11-02 20:16:21,069 INFO L226 Difference]: Without dead ends: 2333 [2022-11-02 20:16:21,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:16:21,070 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 2225 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2225 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:21,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2225 Valid, 1117 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:16:21,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2022-11-02 20:16:21,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 1149. [2022-11-02 20:16:21,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 1148 states have (on average 1.328397212543554) internal successors, (1525), 1148 states have internal predecessors, (1525), 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) [2022-11-02 20:16:21,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1525 transitions. [2022-11-02 20:16:21,107 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1525 transitions. Word has length 359 [2022-11-02 20:16:21,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:21,107 INFO L495 AbstractCegarLoop]: Abstraction has 1149 states and 1525 transitions. [2022-11-02 20:16:21,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.1) internal successors, (561), 10 states have internal predecessors, (561), 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) [2022-11-02 20:16:21,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1525 transitions. [2022-11-02 20:16:21,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:16:21,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:21,110 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:21,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:21,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:16:21,326 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:16:21,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:21,327 INFO L85 PathProgramCache]: Analyzing trace with hash -461303457, now seen corresponding path program 1 times [2022-11-02 20:16:21,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:16:21,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699990448] [2022-11-02 20:16:21,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:21,329 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:16:21,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:16:21,330 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:16:21,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2022-11-02 20:16:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:22,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:16:22,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:24,132 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 121 proven. 53 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:16:24,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:28,227 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 121 proven. 53 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:16:28,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:16:28,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699990448] [2022-11-02 20:16:28,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699990448] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:16:28,227 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:16:28,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:16:28,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452913896] [2022-11-02 20:16:28,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:28,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:16:28,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:16:28,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:16:28,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:16:28,229 INFO L87 Difference]: Start difference. First operand 1149 states and 1525 transitions. Second operand has 10 states, 10 states have (on average 55.1) internal successors, (551), 10 states have internal predecessors, (551), 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) [2022-11-02 20:16:29,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:29,135 INFO L93 Difference]: Finished difference Result 3431 states and 4661 transitions. [2022-11-02 20:16:29,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:16:29,136 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 55.1) internal successors, (551), 10 states have internal predecessors, (551), 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 359 [2022-11-02 20:16:29,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:29,138 INFO L225 Difference]: With dead ends: 3431 [2022-11-02 20:16:29,138 INFO L226 Difference]: Without dead ends: 2783 [2022-11-02 20:16:29,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:16:29,139 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 1762 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:29,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1762 Valid, 1365 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:16:29,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2022-11-02 20:16:29,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 1153. [2022-11-02 20:16:29,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1152 states have (on average 1.3272569444444444) internal successors, (1529), 1152 states have internal predecessors, (1529), 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) [2022-11-02 20:16:29,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1529 transitions. [2022-11-02 20:16:29,163 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1529 transitions. Word has length 359 [2022-11-02 20:16:29,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:29,163 INFO L495 AbstractCegarLoop]: Abstraction has 1153 states and 1529 transitions. [2022-11-02 20:16:29,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 55.1) internal successors, (551), 10 states have internal predecessors, (551), 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) [2022-11-02 20:16:29,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1529 transitions. [2022-11-02 20:16:29,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:16:29,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:29,166 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:29,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (90)] Ended with exit code 0 [2022-11-02 20:16:29,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:16:29,366 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:16:29,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:29,367 INFO L85 PathProgramCache]: Analyzing trace with hash 26743649, now seen corresponding path program 1 times [2022-11-02 20:16:29,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:16:29,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490502807] [2022-11-02 20:16:29,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:29,368 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:16:29,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:16:29,369 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:16:29,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2022-11-02 20:16:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:30,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:16:30,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:31,053 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 119 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:31,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:31,524 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 119 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:31,524 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:16:31,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490502807] [2022-11-02 20:16:31,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490502807] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:16:31,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:16:31,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-02 20:16:31,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88602075] [2022-11-02 20:16:31,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:31,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:16:31,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:16:31,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:16:31,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:16:31,526 INFO L87 Difference]: Start difference. First operand 1153 states and 1529 transitions. Second operand has 14 states, 14 states have (on average 42.142857142857146) internal successors, (590), 14 states have internal predecessors, (590), 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) [2022-11-02 20:16:31,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:31,699 INFO L93 Difference]: Finished difference Result 1819 states and 2462 transitions. [2022-11-02 20:16:31,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:16:31,700 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 42.142857142857146) internal successors, (590), 14 states have internal predecessors, (590), 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 359 [2022-11-02 20:16:31,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:31,701 INFO L225 Difference]: With dead ends: 1819 [2022-11-02 20:16:31,702 INFO L226 Difference]: Without dead ends: 1171 [2022-11-02 20:16:31,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:16:31,703 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 188 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:31,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 2522 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 45 Unchecked, 0.0s Time] [2022-11-02 20:16:31,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2022-11-02 20:16:31,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1171. [2022-11-02 20:16:31,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1170 states have (on average 1.3256410256410256) internal successors, (1551), 1170 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:31,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1551 transitions. [2022-11-02 20:16:31,735 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1551 transitions. Word has length 359 [2022-11-02 20:16:31,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:31,735 INFO L495 AbstractCegarLoop]: Abstraction has 1171 states and 1551 transitions. [2022-11-02 20:16:31,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 42.142857142857146) internal successors, (590), 14 states have internal predecessors, (590), 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) [2022-11-02 20:16:31,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1551 transitions. [2022-11-02 20:16:31,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:16:31,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:31,739 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:31,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (91)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:31,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:16:31,962 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:16:31,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:31,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1255428637, now seen corresponding path program 1 times [2022-11-02 20:16:31,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:16:31,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288484852] [2022-11-02 20:16:31,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:31,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:16:31,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:16:31,966 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:16:31,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2022-11-02 20:16:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:32,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:16:32,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:33,487 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 117 proven. 41 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 20:16:33,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:34,569 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 117 proven. 41 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 20:16:34,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:16:34,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288484852] [2022-11-02 20:16:34,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288484852] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:16:34,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:16:34,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-11-02 20:16:34,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215228191] [2022-11-02 20:16:34,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:34,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:16:34,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:16:34,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:16:34,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:16:34,571 INFO L87 Difference]: Start difference. First operand 1171 states and 1551 transitions. Second operand has 9 states, 9 states have (on average 62.44444444444444) internal successors, (562), 9 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:34,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:34,860 INFO L93 Difference]: Finished difference Result 3462 states and 4692 transitions. [2022-11-02 20:16:34,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:16:34,861 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 62.44444444444444) internal successors, (562), 9 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 359 [2022-11-02 20:16:34,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:34,863 INFO L225 Difference]: With dead ends: 3462 [2022-11-02 20:16:34,863 INFO L226 Difference]: Without dead ends: 2816 [2022-11-02 20:16:34,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:16:34,864 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1242 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:34,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 1580 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:16:34,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2022-11-02 20:16:34,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 1181. [2022-11-02 20:16:34,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 1180 states have (on average 1.323728813559322) internal successors, (1562), 1180 states have internal predecessors, (1562), 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) [2022-11-02 20:16:34,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1562 transitions. [2022-11-02 20:16:34,902 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1562 transitions. Word has length 359 [2022-11-02 20:16:34,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:34,903 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1562 transitions. [2022-11-02 20:16:34,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 62.44444444444444) internal successors, (562), 9 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:34,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1562 transitions. [2022-11-02 20:16:34,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:16:34,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:34,906 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:34,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (92)] Ended with exit code 0 [2022-11-02 20:16:35,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:16:35,122 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:16:35,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:35,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1317535973, now seen corresponding path program 1 times [2022-11-02 20:16:35,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:16:35,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030094645] [2022-11-02 20:16:35,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:35,124 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:16:35,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:16:35,125 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:16:35,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f3fc5a-54be-43f4-91d9-4af7d7745da0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2022-11-02 20:16:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:35,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:16:35,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:37,854 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 115 proven. 59 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:16:37,854 INFO L328 TraceCheckSpWp]: Computing backward predicates...