./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p15.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_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/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_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p15.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/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_3f885034-61fb-4f9d-83c8-da066f1eee67/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 8f9abb075f8a5d1203af466994252ff63c7e0d116def0b0783c5a3556a7ec7f7 --- 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 20:24:04,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:24:04,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:24:04,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:24:04,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:24:04,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:24:04,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:24:04,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:24:04,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:24:04,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:24:04,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:24:04,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:24:04,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:24:04,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:24:04,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:24:04,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:24:04,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:24:04,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:24:04,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:24:04,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:24:04,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:24:04,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:24:04,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:24:04,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:24:04,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:24:04,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:24:04,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:24:04,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:24:04,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:24:04,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:24:04,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:24:04,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:24:04,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:24:04,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:24:04,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:24:04,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:24:04,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:24:04,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:24:04,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:24:04,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:24:04,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:24:04,724 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:24:04,765 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:24:04,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:24:04,766 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:24:04,766 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:24:04,767 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:24:04,767 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:24:04,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:24:04,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:24:04,769 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:24:04,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:24:04,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:24:04,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:24:04,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:24:04,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:24:04,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:24:04,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:24:04,772 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:24:04,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:24:04,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:24:04,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:24:04,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:24:04,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:24:04,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:24:04,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:24:04,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:24:04,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:24:04,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:24:04,776 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:24:04,776 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:24:04,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:24:04,777 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_3f885034-61fb-4f9d-83c8-da066f1eee67/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f9abb075f8a5d1203af466994252ff63c7e0d116def0b0783c5a3556a7ec7f7 [2022-11-02 20:24:05,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:24:05,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:24:05,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:24:05,110 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:24:05,111 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:24:05,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p15.c [2022-11-02 20:24:05,215 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/data/d35353260/f7aa11cb587049da837ac4781b919031/FLAG21d4af7b2 [2022-11-02 20:24:05,775 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:24:05,775 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p15.c [2022-11-02 20:24:05,790 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/data/d35353260/f7aa11cb587049da837ac4781b919031/FLAG21d4af7b2 [2022-11-02 20:24:06,051 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/data/d35353260/f7aa11cb587049da837ac4781b919031 [2022-11-02 20:24:06,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:24:06,056 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:24:06,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:24:06,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:24:06,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:24:06,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:24:06" (1/1) ... [2022-11-02 20:24:06,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fdf3e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:06, skipping insertion in model container [2022-11-02 20:24:06,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:24:06" (1/1) ... [2022-11-02 20:24:06,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:24:06,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:24:06,401 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_3f885034-61fb-4f9d-83c8-da066f1eee67/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p15.c[1107,1120] [2022-11-02 20:24:06,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:24:06,687 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:24:06,698 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_3f885034-61fb-4f9d-83c8-da066f1eee67/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p15.c[1107,1120] [2022-11-02 20:24:06,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:24:06,849 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:24:06,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:06 WrapperNode [2022-11-02 20:24:06,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:24:06,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:24:06,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:24:06,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:24:06,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:06" (1/1) ... [2022-11-02 20:24:06,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:06" (1/1) ... [2022-11-02 20:24:07,039 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1393 [2022-11-02 20:24:07,040 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:24:07,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:24:07,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:24:07,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:24:07,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:06" (1/1) ... [2022-11-02 20:24:07,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:06" (1/1) ... [2022-11-02 20:24:07,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:06" (1/1) ... [2022-11-02 20:24:07,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:06" (1/1) ... [2022-11-02 20:24:07,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:06" (1/1) ... [2022-11-02 20:24:07,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:06" (1/1) ... [2022-11-02 20:24:07,139 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:06" (1/1) ... [2022-11-02 20:24:07,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:06" (1/1) ... [2022-11-02 20:24:07,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:24:07,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:24:07,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:24:07,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:24:07,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:06" (1/1) ... [2022-11-02 20:24:07,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:24:07,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:07,257 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:24:07,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:24:07,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:24:07,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:24:07,641 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:24:07,644 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:24:09,254 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:24:09,272 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:24:09,272 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:24:09,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:09 BoogieIcfgContainer [2022-11-02 20:24:09,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:24:09,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:24:09,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:24:09,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:24:09,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:24:06" (1/3) ... [2022-11-02 20:24:09,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c870589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:24:09, skipping insertion in model container [2022-11-02 20:24:09,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:06" (2/3) ... [2022-11-02 20:24:09,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c870589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:24:09, skipping insertion in model container [2022-11-02 20:24:09,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:09" (3/3) ... [2022-11-02 20:24:09,291 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p15.c [2022-11-02 20:24:09,312 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:24:09,312 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:24:09,387 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:24:09,403 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;@4b423454, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:24:09,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:24:09,408 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 20:24:09,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:24:09,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:09,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:24:09,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:09,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:09,423 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:24:09,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:09,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438446338] [2022-11-02 20:24:09,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:09,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:24:09,958 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:24:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:24:10,211 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:24:10,213 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:24:10,214 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:24:10,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:24:10,221 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:24:10,227 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:24:10,266 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 20:24:10,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:24:10 BoogieIcfgContainer [2022-11-02 20:24:10,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:24:10,286 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:24:10,286 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:24:10,287 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:24:10,287 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:09" (3/4) ... [2022-11-02 20:24:10,294 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:24:10,294 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:24:10,296 INFO L158 Benchmark]: Toolchain (without parser) took 4238.89ms. Allocated memory was 100.7MB in the beginning and 205.5MB in the end (delta: 104.9MB). Free memory was 63.6MB in the beginning and 126.1MB in the end (delta: -62.5MB). Peak memory consumption was 43.3MB. Max. memory is 16.1GB. [2022-11-02 20:24:10,297 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 100.7MB. Free memory was 71.7MB in the beginning and 71.7MB in the end (delta: 27.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:24:10,298 INFO L158 Benchmark]: CACSL2BoogieTranslator took 789.15ms. Allocated memory is still 100.7MB. Free memory was 63.4MB in the beginning and 48.4MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-02 20:24:10,300 INFO L158 Benchmark]: Boogie Procedure Inliner took 189.09ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 48.4MB in the beginning and 91.4MB in the end (delta: -43.0MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2022-11-02 20:24:10,306 INFO L158 Benchmark]: Boogie Preprocessor took 142.63ms. Allocated memory is still 130.0MB. Free memory was 91.4MB in the beginning and 82.2MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:24:10,308 INFO L158 Benchmark]: RCFGBuilder took 2091.40ms. Allocated memory was 130.0MB in the beginning and 205.5MB in the end (delta: 75.5MB). Free memory was 82.2MB in the beginning and 123.5MB in the end (delta: -41.3MB). Peak memory consumption was 51.6MB. Max. memory is 16.1GB. [2022-11-02 20:24:10,309 INFO L158 Benchmark]: TraceAbstraction took 1008.25ms. Allocated memory is still 205.5MB. Free memory was 122.5MB in the beginning and 126.1MB in the end (delta: -3.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:24:10,310 INFO L158 Benchmark]: Witness Printer took 8.06ms. Allocated memory is still 205.5MB. Free memory was 126.1MB in the beginning and 126.1MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:24:10,318 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 100.7MB. Free memory was 71.7MB in the beginning and 71.7MB in the end (delta: 27.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 789.15ms. Allocated memory is still 100.7MB. Free memory was 63.4MB in the beginning and 48.4MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 189.09ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 48.4MB in the beginning and 91.4MB in the end (delta: -43.0MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 142.63ms. Allocated memory is still 130.0MB. Free memory was 91.4MB in the beginning and 82.2MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 2091.40ms. Allocated memory was 130.0MB in the beginning and 205.5MB in the end (delta: 75.5MB). Free memory was 82.2MB in the beginning and 123.5MB in the end (delta: -41.3MB). Peak memory consumption was 51.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1008.25ms. Allocated memory is still 205.5MB. Free memory was 122.5MB in the beginning and 126.1MB in the end (delta: -3.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 8.06ms. Allocated memory is still 205.5MB. Free memory was 126.1MB in the beginning and 126.1MB in the end (delta: 2.6kB). 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 168, overapproximation of bitwiseOr at line 174, overapproximation of bitwiseAnd at line 151. 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_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 3); [L35] const SORT_7 msb_SORT_7 = (SORT_7)1 << (3 - 1); [L37] const SORT_20 mask_SORT_20 = (SORT_20)-1 >> (sizeof(SORT_20) * 8 - 2); [L38] const SORT_20 msb_SORT_20 = (SORT_20)1 << (2 - 1); [L40] const SORT_85 mask_SORT_85 = (SORT_85)-1 >> (sizeof(SORT_85) * 8 - 4); [L41] const SORT_85 msb_SORT_85 = (SORT_85)1 << (4 - 1); [L43] const SORT_150 mask_SORT_150 = (SORT_150)-1 >> (sizeof(SORT_150) * 8 - 32); [L44] const SORT_150 msb_SORT_150 = (SORT_150)1 << (32 - 1); [L46] const SORT_7 var_8 = 0; [L47] const SORT_7 var_11 = 4; [L48] const SORT_5 var_13 = 0; [L49] const SORT_7 var_17 = 2; [L50] const SORT_20 var_22 = 0; [L51] const SORT_3 var_26 = 0; [L52] const SORT_1 var_35 = 1; [L53] const SORT_1 var_43 = 0; [L54] const SORT_7 var_60 = 1; [L55] const SORT_7 var_66 = 5; [L56] const SORT_7 var_70 = 3; [L57] const SORT_7 var_102 = 7; [L58] const SORT_7 var_107 = 6; [L59] const SORT_150 var_152 = 0; [L60] const SORT_3 var_167 = 2; [L61] const SORT_3 var_184 = 31; [L63] SORT_1 input_2; [L64] SORT_3 input_4; [L65] SORT_5 input_6; [L66] SORT_3 input_173; [L67] SORT_3 input_174; [L68] SORT_3 input_175; [L69] SORT_3 input_183; [L70] SORT_3 input_193; [L71] SORT_3 input_194; [L72] SORT_3 input_195; [L73] SORT_3 input_198; [L74] SORT_3 input_217; [L75] SORT_3 input_218; [L76] SORT_3 input_219; [L77] SORT_3 input_222; [L78] SORT_3 input_224; [L79] SORT_20 input_238; [L80] SORT_20 input_239; [L81] SORT_20 input_240; [L83] SORT_7 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_7; [L84] SORT_5 state_14 = __VERIFIER_nondet_ushort() & mask_SORT_5; [L85] SORT_3 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L86] SORT_3 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L87] SORT_3 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L88] SORT_3 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L89] SORT_1 state_44 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_3 state_46 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L91] SORT_3 state_48 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L92] SORT_3 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L93] SORT_3 state_52 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L94] SORT_3 state_54 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L95] SORT_3 state_56 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L97] SORT_7 init_10_arg_1 = var_8; [L98] state_9 = init_10_arg_1 [L99] SORT_5 init_15_arg_1 = var_13; [L100] state_14 = init_15_arg_1 [L101] SORT_3 init_28_arg_1 = var_26; [L102] state_27 = init_28_arg_1 [L103] SORT_3 init_30_arg_1 = var_26; [L104] state_29 = init_30_arg_1 [L105] SORT_3 init_40_arg_1 = var_26; [L106] state_39 = init_40_arg_1 [L107] SORT_3 init_42_arg_1 = var_26; [L108] state_41 = init_42_arg_1 [L109] SORT_1 init_45_arg_1 = var_43; [L110] state_44 = init_45_arg_1 [L111] SORT_3 init_47_arg_1 = var_26; [L112] state_46 = init_47_arg_1 [L113] SORT_3 init_49_arg_1 = var_26; [L114] state_48 = init_49_arg_1 [L115] SORT_3 init_51_arg_1 = var_26; [L116] state_50 = init_51_arg_1 [L117] SORT_3 init_53_arg_1 = var_26; [L118] state_52 = init_53_arg_1 [L119] SORT_3 init_55_arg_1 = var_26; [L120] state_54 = init_55_arg_1 [L121] SORT_3 init_57_arg_1 = var_26; [L122] state_56 = init_57_arg_1 VAL [init_10_arg_1=0, init_15_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_45_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, mask_SORT_1=1, mask_SORT_150=4294967295, mask_SORT_20=3, mask_SORT_3=31, mask_SORT_5=4095, mask_SORT_7=7, mask_SORT_85=15, msb_SORT_1=1, msb_SORT_150=2147483648, msb_SORT_20=2, msb_SORT_3=16, msb_SORT_5=2048, msb_SORT_7=4, msb_SORT_85=8, state_14=0, state_27=0, state_29=0, state_39=0, state_41=0, state_44=0, state_46=0, state_48=0, state_50=0, state_52=0, state_54=0, state_56=0, state_9=0, var_102=7, var_107=6, var_11=4, var_13=0, var_152=0, var_167=2, var_17=2, var_184=31, var_22=0, var_26=0, var_35=1, var_43=0, var_60=1, var_66=5, var_70=3, var_8=0] [L125] input_2 = __VERIFIER_nondet_uchar() [L126] input_4 = __VERIFIER_nondet_uchar() [L127] input_6 = __VERIFIER_nondet_ushort() [L128] input_173 = __VERIFIER_nondet_uchar() [L129] input_174 = __VERIFIER_nondet_uchar() [L130] input_175 = __VERIFIER_nondet_uchar() [L131] input_183 = __VERIFIER_nondet_uchar() [L132] input_193 = __VERIFIER_nondet_uchar() [L133] input_194 = __VERIFIER_nondet_uchar() [L134] input_195 = __VERIFIER_nondet_uchar() [L135] input_198 = __VERIFIER_nondet_uchar() [L136] input_217 = __VERIFIER_nondet_uchar() [L137] input_218 = __VERIFIER_nondet_uchar() [L138] input_219 = __VERIFIER_nondet_uchar() [L139] input_222 = __VERIFIER_nondet_uchar() [L140] input_224 = __VERIFIER_nondet_uchar() [L141] input_238 = __VERIFIER_nondet_uchar() [L142] input_239 = __VERIFIER_nondet_uchar() [L143] input_240 = __VERIFIER_nondet_uchar() [L146] SORT_7 var_12_arg_0 = state_9; [L147] SORT_7 var_12_arg_1 = var_11; [L148] SORT_1 var_12 = var_12_arg_0 == var_12_arg_1; [L149] SORT_5 var_16_arg_0 = state_14; [L150] SORT_7 var_16 = var_16_arg_0 >> 9; [L151] var_16 = var_16 & mask_SORT_7 [L152] SORT_7 var_18_arg_0 = var_16; [L153] SORT_7 var_18_arg_1 = var_17; [L154] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L155] SORT_1 var_19_arg_0 = var_12; [L156] SORT_1 var_19_arg_1 = var_18; [L157] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L158] SORT_5 var_21_arg_0 = state_14; [L159] SORT_20 var_21 = var_21_arg_0 >> 7; [L160] var_21 = var_21 & mask_SORT_20 [L161] SORT_20 var_23_arg_0 = var_21; [L162] SORT_20 var_23_arg_1 = var_22; [L163] SORT_1 var_23 = var_23_arg_0 == var_23_arg_1; [L164] SORT_1 var_24_arg_0 = var_19; [L165] SORT_1 var_24_arg_1 = var_23; [L166] SORT_1 var_24 = var_24_arg_0 & var_24_arg_1; [L167] SORT_1 var_25_arg_0 = var_24; [L168] SORT_1 var_25 = ~var_25_arg_0; [L169] SORT_3 var_31_arg_0 = state_27; [L170] SORT_3 var_31_arg_1 = state_29; [L171] SORT_1 var_31 = var_31_arg_0 == var_31_arg_1; [L172] SORT_1 var_32_arg_0 = var_25; [L173] SORT_1 var_32_arg_1 = var_31; [L174] SORT_1 var_32 = var_32_arg_0 | var_32_arg_1; [L175] SORT_1 var_36_arg_0 = var_32; [L176] SORT_1 var_36 = ~var_36_arg_0; [L177] SORT_1 var_37_arg_0 = var_35; [L178] SORT_1 var_37_arg_1 = var_36; [L179] SORT_1 var_37 = var_37_arg_0 & var_37_arg_1; [L180] var_37 = var_37 & mask_SORT_1 [L181] SORT_1 bad_38_arg_0 = var_37; [L182] CALL __VERIFIER_assert(!(bad_38_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: 0.9s, 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 20:24:10,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/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_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/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_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p15.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/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_3f885034-61fb-4f9d-83c8-da066f1eee67/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 8f9abb075f8a5d1203af466994252ff63c7e0d116def0b0783c5a3556a7ec7f7 --- 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 20:24:12,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:24:12,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:24:12,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:24:12,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:24:12,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:24:12,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:24:12,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:24:12,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:24:12,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:24:12,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:24:12,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:24:12,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:24:12,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:24:12,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:24:12,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:24:12,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:24:12,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:24:12,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:24:12,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:24:12,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:24:12,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:24:12,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:24:12,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:24:12,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:24:12,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:24:12,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:24:12,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:24:12,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:24:12,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:24:12,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:24:12,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:24:12,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:24:12,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:24:12,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:24:12,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:24:12,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:24:12,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:24:12,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:24:12,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:24:12,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:24:12,947 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:24:12,993 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:24:12,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:24:12,995 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:24:12,995 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:24:12,996 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:24:12,996 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:24:12,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:24:12,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:24:12,998 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:24:12,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:24:12,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:24:13,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:24:13,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:24:13,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:24:13,000 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:24:13,001 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:24:13,001 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:24:13,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:24:13,001 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:24:13,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:24:13,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:24:13,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:24:13,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:24:13,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:24:13,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:24:13,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:24:13,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:24:13,003 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:24:13,004 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:24:13,004 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:24:13,004 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:24:13,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:24:13,005 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:24:13,005 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_3f885034-61fb-4f9d-83c8-da066f1eee67/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f9abb075f8a5d1203af466994252ff63c7e0d116def0b0783c5a3556a7ec7f7 [2022-11-02 20:24:13,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:24:13,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:24:13,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:24:13,476 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:24:13,479 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:24:13,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p15.c [2022-11-02 20:24:13,555 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/data/094607fd6/f6111dca6cdc48f5a6a6ff7bb99aa11a/FLAG042d2a086 [2022-11-02 20:24:14,123 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:24:14,124 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p15.c [2022-11-02 20:24:14,144 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/data/094607fd6/f6111dca6cdc48f5a6a6ff7bb99aa11a/FLAG042d2a086 [2022-11-02 20:24:14,398 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/data/094607fd6/f6111dca6cdc48f5a6a6ff7bb99aa11a [2022-11-02 20:24:14,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:24:14,402 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:24:14,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:24:14,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:24:14,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:24:14,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:24:14" (1/1) ... [2022-11-02 20:24:14,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69a674b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:14, skipping insertion in model container [2022-11-02 20:24:14,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:24:14" (1/1) ... [2022-11-02 20:24:14,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:24:14,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:24:14,638 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_3f885034-61fb-4f9d-83c8-da066f1eee67/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p15.c[1107,1120] [2022-11-02 20:24:14,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:24:14,922 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:24:14,943 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_3f885034-61fb-4f9d-83c8-da066f1eee67/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p15.c[1107,1120] [2022-11-02 20:24:15,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:24:15,106 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:24:15,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:15 WrapperNode [2022-11-02 20:24:15,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:24:15,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:24:15,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:24:15,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:24:15,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:15" (1/1) ... [2022-11-02 20:24:15,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:15" (1/1) ... [2022-11-02 20:24:15,205 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1393 [2022-11-02 20:24:15,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:24:15,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:24:15,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:24:15,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:24:15,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:15" (1/1) ... [2022-11-02 20:24:15,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:15" (1/1) ... [2022-11-02 20:24:15,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:15" (1/1) ... [2022-11-02 20:24:15,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:15" (1/1) ... [2022-11-02 20:24:15,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:15" (1/1) ... [2022-11-02 20:24:15,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:15" (1/1) ... [2022-11-02 20:24:15,355 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:15" (1/1) ... [2022-11-02 20:24:15,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:15" (1/1) ... [2022-11-02 20:24:15,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:24:15,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:24:15,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:24:15,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:24:15,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:15" (1/1) ... [2022-11-02 20:24:15,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:24:15,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:15,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:24:15,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:24:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:24:15,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:24:15,777 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:24:15,779 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:24:17,067 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:24:17,083 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:24:17,084 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:24:17,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:17 BoogieIcfgContainer [2022-11-02 20:24:17,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:24:17,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:24:17,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:24:17,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:24:17,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:24:14" (1/3) ... [2022-11-02 20:24:17,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6afce6b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:24:17, skipping insertion in model container [2022-11-02 20:24:17,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:15" (2/3) ... [2022-11-02 20:24:17,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6afce6b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:24:17, skipping insertion in model container [2022-11-02 20:24:17,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:17" (3/3) ... [2022-11-02 20:24:17,097 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p15.c [2022-11-02 20:24:17,122 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:24:17,122 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:24:17,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:24:17,229 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;@5a1545fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:24:17,229 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:24:17,235 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 20:24:17,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:24:17,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:17,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:24:17,243 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:17,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:17,251 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:24:17,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:17,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957954617] [2022-11-02 20:24:17,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:17,270 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:17,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:17,275 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:17,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:24:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:17,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:24:17,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:17,793 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 20:24:17,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:17,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:17,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957954617] [2022-11-02 20:24:17,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957954617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:17,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:17,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:24:17,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186535777] [2022-11-02 20:24:17,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:17,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:24:17,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:17,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:24:17,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:24:17,847 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 20:24:18,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:18,194 INFO L93 Difference]: Finished difference Result 542 states and 813 transitions. [2022-11-02 20:24:18,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:24:18,198 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 20:24:18,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:18,213 INFO L225 Difference]: With dead ends: 542 [2022-11-02 20:24:18,215 INFO L226 Difference]: Without dead ends: 359 [2022-11-02 20:24:18,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:18,223 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 525 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:18,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 732 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:24:18,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-02 20:24:18,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 183. [2022-11-02 20:24:18,272 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 20:24:18,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 270 transitions. [2022-11-02 20:24:18,274 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 270 transitions. Word has length 5 [2022-11-02 20:24:18,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:18,275 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 270 transitions. [2022-11-02 20:24:18,275 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 20:24:18,276 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 270 transitions. [2022-11-02 20:24:18,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:18,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:18,283 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 20:24:18,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:18,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:18,488 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:18,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:18,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1686520099, now seen corresponding path program 1 times [2022-11-02 20:24:18,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:18,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954310367] [2022-11-02 20:24:18,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:18,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:18,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:18,493 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:18,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:24:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:19,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:24:19,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:19,296 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 20:24:19,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:19,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:19,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954310367] [2022-11-02 20:24:19,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954310367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:19,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:19,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:24:19,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324414127] [2022-11-02 20:24:19,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:19,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:24:19,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:19,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:24:19,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:24:19,318 INFO L87 Difference]: Start difference. First operand 183 states and 270 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 20:24:19,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:19,537 INFO L93 Difference]: Finished difference Result 715 states and 1062 transitions. [2022-11-02 20:24:19,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:24:19,539 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 20:24:19,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:19,543 INFO L225 Difference]: With dead ends: 715 [2022-11-02 20:24:19,547 INFO L226 Difference]: Without dead ends: 536 [2022-11-02 20:24:19,548 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 20:24:19,550 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 783 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:19,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 1005 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:24:19,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-02 20:24:19,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 185. [2022-11-02 20:24:19,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.4782608695652173) internal successors, (272), 184 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:19,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 272 transitions. [2022-11-02 20:24:19,582 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 272 transitions. Word has length 182 [2022-11-02 20:24:19,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:19,587 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 272 transitions. [2022-11-02 20:24:19,588 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 20:24:19,588 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 272 transitions. [2022-11-02 20:24:19,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:19,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:19,599 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 20:24:19,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:19,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:19,814 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:19,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:19,815 INFO L85 PathProgramCache]: Analyzing trace with hash -87371041, now seen corresponding path program 1 times [2022-11-02 20:24:19,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:19,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970841105] [2022-11-02 20:24:19,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:19,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:19,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:19,822 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:19,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:24:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:20,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:24:20,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:20,660 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 20:24:20,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:20,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:20,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970841105] [2022-11-02 20:24:20,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970841105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:20,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:20,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:24:20,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775980055] [2022-11-02 20:24:20,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:20,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:24:20,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:20,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:24:20,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:24:20,685 INFO L87 Difference]: Start difference. First operand 185 states and 272 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 20:24:20,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:20,857 INFO L93 Difference]: Finished difference Result 544 states and 805 transitions. [2022-11-02 20:24:20,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:24:20,858 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 20:24:20,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:20,860 INFO L225 Difference]: With dead ends: 544 [2022-11-02 20:24:20,860 INFO L226 Difference]: Without dead ends: 365 [2022-11-02 20:24:20,862 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 20:24:20,866 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 521 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:20,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 766 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:24:20,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-11-02 20:24:20,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 187. [2022-11-02 20:24:20,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.4731182795698925) internal successors, (274), 186 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 20:24:20,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 274 transitions. [2022-11-02 20:24:20,889 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 274 transitions. Word has length 182 [2022-11-02 20:24:20,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:20,891 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 274 transitions. [2022-11-02 20:24:20,891 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 20:24:20,891 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 274 transitions. [2022-11-02 20:24:20,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:20,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:20,902 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 20:24:20,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-02 20:24:21,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:21,116 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:21,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:21,116 INFO L85 PathProgramCache]: Analyzing trace with hash -106912163, now seen corresponding path program 1 times [2022-11-02 20:24:21,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:21,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981024341] [2022-11-02 20:24:21,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:21,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:21,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:21,121 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:21,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:24:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:21,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:24:21,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:21,750 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 20:24:21,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:21,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:21,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981024341] [2022-11-02 20:24:21,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981024341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:21,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:21,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:24:21,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126233668] [2022-11-02 20:24:21,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:21,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:24:21,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:21,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:24:21,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:24:21,754 INFO L87 Difference]: Start difference. First operand 187 states and 274 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 20:24:21,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:21,811 INFO L93 Difference]: Finished difference Result 715 states and 1060 transitions. [2022-11-02 20:24:21,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:24:21,812 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 20:24:21,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:21,814 INFO L225 Difference]: With dead ends: 715 [2022-11-02 20:24:21,815 INFO L226 Difference]: Without dead ends: 536 [2022-11-02 20:24:21,815 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 20:24:21,816 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 771 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1039 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 20:24:21,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 1039 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:24:21,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-02 20:24:21,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 189. [2022-11-02 20:24:21,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.4680851063829787) internal successors, (276), 188 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:21,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 276 transitions. [2022-11-02 20:24:21,827 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 276 transitions. Word has length 182 [2022-11-02 20:24:21,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:21,828 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 276 transitions. [2022-11-02 20:24:21,828 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 20:24:21,828 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 276 transitions. [2022-11-02 20:24:21,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:21,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:21,830 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 20:24:21,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:22,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:22,043 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:22,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:22,044 INFO L85 PathProgramCache]: Analyzing trace with hash 420481887, now seen corresponding path program 1 times [2022-11-02 20:24:22,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:22,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970097711] [2022-11-02 20:24:22,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:22,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:22,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:22,049 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:22,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:24:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:22,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:24:22,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:22,714 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 20:24:22,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:22,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:22,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970097711] [2022-11-02 20:24:22,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970097711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:22,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:22,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:22,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180292908] [2022-11-02 20:24:22,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:22,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:22,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:22,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:22,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:22,719 INFO L87 Difference]: Start difference. First operand 189 states and 276 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 20:24:22,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:22,879 INFO L93 Difference]: Finished difference Result 716 states and 1060 transitions. [2022-11-02 20:24:22,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:22,880 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 20:24:22,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:22,882 INFO L225 Difference]: With dead ends: 716 [2022-11-02 20:24:22,882 INFO L226 Difference]: Without dead ends: 537 [2022-11-02 20:24:22,883 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 20:24:22,884 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 1026 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1538 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 20:24:22,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1538 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:24:22,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-02 20:24:22,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 191. [2022-11-02 20:24:22,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.4631578947368422) internal successors, (278), 190 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 20:24:22,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 278 transitions. [2022-11-02 20:24:22,894 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 278 transitions. Word has length 182 [2022-11-02 20:24:22,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:22,894 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 278 transitions. [2022-11-02 20:24:22,895 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 20:24:22,895 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 278 transitions. [2022-11-02 20:24:22,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:22,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:22,897 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 20:24:22,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:23,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:23,115 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:23,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:23,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1069074657, now seen corresponding path program 1 times [2022-11-02 20:24:23,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:23,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878044208] [2022-11-02 20:24:23,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:23,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:23,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:23,119 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:23,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:24:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:23,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:24:23,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:23,782 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 20:24:23,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:23,782 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:23,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878044208] [2022-11-02 20:24:23,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878044208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:23,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:23,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:23,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289659648] [2022-11-02 20:24:23,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:23,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:23,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:23,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:23,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:23,785 INFO L87 Difference]: Start difference. First operand 191 states and 278 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 20:24:23,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:23,986 INFO L93 Difference]: Finished difference Result 724 states and 1069 transitions. [2022-11-02 20:24:23,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:23,987 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 20:24:23,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:23,989 INFO L225 Difference]: With dead ends: 724 [2022-11-02 20:24:23,989 INFO L226 Difference]: Without dead ends: 545 [2022-11-02 20:24:23,989 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 20:24:23,990 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 1033 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:23,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 1521 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:24:23,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-11-02 20:24:23,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 193. [2022-11-02 20:24:23,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.4583333333333333) internal successors, (280), 192 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 20:24:23,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 280 transitions. [2022-11-02 20:24:23,998 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 280 transitions. Word has length 182 [2022-11-02 20:24:23,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:23,999 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 280 transitions. [2022-11-02 20:24:23,999 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 20:24:23,999 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 280 transitions. [2022-11-02 20:24:24,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:24,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:24,001 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 20:24:24,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:24,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:24,215 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:24,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:24,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1159134947, now seen corresponding path program 1 times [2022-11-02 20:24:24,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:24,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746121684] [2022-11-02 20:24:24,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:24,218 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:24,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:24,219 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:24,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:24:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:24,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:24:24,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:24,878 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 20:24:24,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:24,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:24,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746121684] [2022-11-02 20:24:24,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746121684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:24,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:24,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:24:24,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799936011] [2022-11-02 20:24:24,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:24,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:24:24,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:24,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:24:24,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:24:24,881 INFO L87 Difference]: Start difference. First operand 193 states and 280 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 20:24:24,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:24,986 INFO L93 Difference]: Finished difference Result 715 states and 1057 transitions. [2022-11-02 20:24:24,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:24:24,987 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 20:24:24,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:24,989 INFO L225 Difference]: With dead ends: 715 [2022-11-02 20:24:24,989 INFO L226 Difference]: Without dead ends: 536 [2022-11-02 20:24:24,990 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 20:24:24,990 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 753 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1030 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 20:24:24,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1030 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:24:24,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-02 20:24:24,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 195. [2022-11-02 20:24:24,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.4536082474226804) internal successors, (282), 194 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 20:24:24,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 282 transitions. [2022-11-02 20:24:24,999 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 282 transitions. Word has length 182 [2022-11-02 20:24:24,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:24,999 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 282 transitions. [2022-11-02 20:24:24,999 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 20:24:25,000 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 282 transitions. [2022-11-02 20:24:25,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:25,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:25,002 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 20:24:25,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:25,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:25,215 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:25,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:25,216 INFO L85 PathProgramCache]: Analyzing trace with hash -248591003, now seen corresponding path program 1 times [2022-11-02 20:24:25,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:25,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329014961] [2022-11-02 20:24:25,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:25,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:25,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:25,220 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:25,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:24:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:25,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:24:25,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:25,888 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 20:24:25,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:25,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:25,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329014961] [2022-11-02 20:24:25,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329014961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:25,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:25,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:25,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323805149] [2022-11-02 20:24:25,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:25,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:25,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:25,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:25,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:25,892 INFO L87 Difference]: Start difference. First operand 195 states and 282 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 20:24:26,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:26,057 INFO L93 Difference]: Finished difference Result 730 states and 1076 transitions. [2022-11-02 20:24:26,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:26,058 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 20:24:26,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:26,060 INFO L225 Difference]: With dead ends: 730 [2022-11-02 20:24:26,061 INFO L226 Difference]: Without dead ends: 551 [2022-11-02 20:24:26,061 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 20:24:26,062 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 1031 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1550 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 20:24:26,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1031 Valid, 1550 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:24:26,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-11-02 20:24:26,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 197. [2022-11-02 20:24:26,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.4489795918367347) internal successors, (284), 196 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 20:24:26,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 284 transitions. [2022-11-02 20:24:26,080 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 284 transitions. Word has length 182 [2022-11-02 20:24:26,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:26,081 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 284 transitions. [2022-11-02 20:24:26,081 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 20:24:26,081 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 284 transitions. [2022-11-02 20:24:26,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:26,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:26,084 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 20:24:26,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:26,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:26,301 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:26,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:26,302 INFO L85 PathProgramCache]: Analyzing trace with hash 2123125863, now seen corresponding path program 1 times [2022-11-02 20:24:26,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:26,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444481851] [2022-11-02 20:24:26,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:26,303 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:26,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:26,304 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:26,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:24:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:26,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:24:26,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:26,961 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 20:24:26,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:26,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:26,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444481851] [2022-11-02 20:24:26,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444481851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:26,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:26,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:26,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143104542] [2022-11-02 20:24:26,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:26,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:26,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:26,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:26,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:26,965 INFO L87 Difference]: Start difference. First operand 197 states and 284 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 20:24:27,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:27,165 INFO L93 Difference]: Finished difference Result 730 states and 1075 transitions. [2022-11-02 20:24:27,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:27,166 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 20:24:27,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:27,168 INFO L225 Difference]: With dead ends: 730 [2022-11-02 20:24:27,169 INFO L226 Difference]: Without dead ends: 551 [2022-11-02 20:24:27,169 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 20:24:27,170 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 1024 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:27,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 1543 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:24:27,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-11-02 20:24:27,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 199. [2022-11-02 20:24:27,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.4444444444444444) internal successors, (286), 198 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 20:24:27,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 286 transitions. [2022-11-02 20:24:27,179 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 286 transitions. Word has length 182 [2022-11-02 20:24:27,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:27,180 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 286 transitions. [2022-11-02 20:24:27,180 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 20:24:27,180 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 286 transitions. [2022-11-02 20:24:27,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:27,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:27,183 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 20:24:27,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:27,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:27,403 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:27,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:27,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1673284631, now seen corresponding path program 1 times [2022-11-02 20:24:27,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:27,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641337927] [2022-11-02 20:24:27,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:27,405 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:27,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:27,406 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:27,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:24:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:28,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:24:28,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:28,134 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 20:24:28,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:28,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:28,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641337927] [2022-11-02 20:24:28,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641337927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:28,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:28,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:28,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688797825] [2022-11-02 20:24:28,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:28,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:28,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:28,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:28,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:28,141 INFO L87 Difference]: Start difference. First operand 199 states and 286 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 20:24:28,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:28,316 INFO L93 Difference]: Finished difference Result 730 states and 1074 transitions. [2022-11-02 20:24:28,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:28,317 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 20:24:28,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:28,320 INFO L225 Difference]: With dead ends: 730 [2022-11-02 20:24:28,320 INFO L226 Difference]: Without dead ends: 551 [2022-11-02 20:24:28,321 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 20:24:28,321 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1012 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 1532 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 20:24:28,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 1532 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:24:28,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-11-02 20:24:28,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 203. [2022-11-02 20:24:28,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.4405940594059405) internal successors, (291), 202 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:28,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 291 transitions. [2022-11-02 20:24:28,332 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 291 transitions. Word has length 182 [2022-11-02 20:24:28,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:28,333 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 291 transitions. [2022-11-02 20:24:28,334 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 20:24:28,334 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 291 transitions. [2022-11-02 20:24:28,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:28,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:28,337 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 20:24:28,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:28,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:28,554 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:28,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:28,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1005902741, now seen corresponding path program 1 times [2022-11-02 20:24:28,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:28,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962682784] [2022-11-02 20:24:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:28,556 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:28,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:28,558 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:28,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:24:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:29,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:24:29,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:29,244 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 20:24:29,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:29,245 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:29,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962682784] [2022-11-02 20:24:29,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962682784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:29,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:29,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:29,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947277820] [2022-11-02 20:24:29,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:29,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:29,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:29,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:29,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:29,248 INFO L87 Difference]: Start difference. First operand 203 states and 291 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 20:24:29,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:29,413 INFO L93 Difference]: Finished difference Result 730 states and 1073 transitions. [2022-11-02 20:24:29,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:29,414 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 20:24:29,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:29,417 INFO L225 Difference]: With dead ends: 730 [2022-11-02 20:24:29,417 INFO L226 Difference]: Without dead ends: 551 [2022-11-02 20:24:29,418 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 20:24:29,419 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 1005 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:29,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 1532 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:24:29,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-11-02 20:24:29,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 205. [2022-11-02 20:24:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.4362745098039216) internal successors, (293), 204 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:29,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 293 transitions. [2022-11-02 20:24:29,428 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 293 transitions. Word has length 182 [2022-11-02 20:24:29,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:29,428 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 293 transitions. [2022-11-02 20:24:29,429 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 20:24:29,429 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 293 transitions. [2022-11-02 20:24:29,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:29,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:29,431 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 20:24:29,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:29,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:29,656 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:29,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:29,657 INFO L85 PathProgramCache]: Analyzing trace with hash -661074579, now seen corresponding path program 1 times [2022-11-02 20:24:29,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:29,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190083407] [2022-11-02 20:24:29,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:29,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:29,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:29,659 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:29,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:24:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:30,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:24:30,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:30,335 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 20:24:30,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:30,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:30,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190083407] [2022-11-02 20:24:30,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190083407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:30,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:30,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:30,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746295109] [2022-11-02 20:24:30,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:30,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:30,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:30,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:30,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:30,339 INFO L87 Difference]: Start difference. First operand 205 states and 293 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 20:24:30,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:30,495 INFO L93 Difference]: Finished difference Result 730 states and 1072 transitions. [2022-11-02 20:24:30,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:30,496 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 20:24:30,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:30,499 INFO L225 Difference]: With dead ends: 730 [2022-11-02 20:24:30,499 INFO L226 Difference]: Without dead ends: 551 [2022-11-02 20:24:30,499 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 20:24:30,500 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 998 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:30,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 1527 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:24:30,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-11-02 20:24:30,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 207. [2022-11-02 20:24:30,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4320388349514563) internal successors, (295), 206 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:30,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 295 transitions. [2022-11-02 20:24:30,508 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 295 transitions. Word has length 182 [2022-11-02 20:24:30,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:30,510 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 295 transitions. [2022-11-02 20:24:30,510 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 20:24:30,510 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 295 transitions. [2022-11-02 20:24:30,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:30,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:30,521 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 20:24:30,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:30,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:30,738 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:30,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:30,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1864421103, now seen corresponding path program 1 times [2022-11-02 20:24:30,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:30,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575904771] [2022-11-02 20:24:30,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:30,739 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:30,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:30,740 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:30,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:24:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:31,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:24:31,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:31,382 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 20:24:31,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:31,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:31,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575904771] [2022-11-02 20:24:31,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575904771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:31,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:31,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:31,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915490145] [2022-11-02 20:24:31,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:31,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:31,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:31,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:31,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:31,385 INFO L87 Difference]: Start difference. First operand 207 states and 295 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 20:24:31,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:31,552 INFO L93 Difference]: Finished difference Result 716 states and 1052 transitions. [2022-11-02 20:24:31,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:31,553 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 20:24:31,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:31,555 INFO L225 Difference]: With dead ends: 716 [2022-11-02 20:24:31,555 INFO L226 Difference]: Without dead ends: 537 [2022-11-02 20:24:31,556 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 20:24:31,557 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 960 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:31,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 1499 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:24:31,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-02 20:24:31,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 211. [2022-11-02 20:24:31,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.4285714285714286) internal successors, (300), 210 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 20:24:31,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 300 transitions. [2022-11-02 20:24:31,564 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 300 transitions. Word has length 182 [2022-11-02 20:24:31,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:31,564 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 300 transitions. [2022-11-02 20:24:31,565 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 20:24:31,565 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 300 transitions. [2022-11-02 20:24:31,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:31,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:31,567 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 20:24:31,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:31,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:31,784 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:31,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:31,785 INFO L85 PathProgramCache]: Analyzing trace with hash -983965327, now seen corresponding path program 1 times [2022-11-02 20:24:31,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:31,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377743172] [2022-11-02 20:24:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:31,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:31,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:31,788 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:31,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:24:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:32,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:24:32,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:32,500 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 20:24:32,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:32,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:32,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377743172] [2022-11-02 20:24:32,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377743172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:32,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:32,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:24:32,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515710519] [2022-11-02 20:24:32,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:32,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:24:32,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:32,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:24:32,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:24:32,510 INFO L87 Difference]: Start difference. First operand 211 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 20:24:32,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:32,765 INFO L93 Difference]: Finished difference Result 746 states and 1094 transitions. [2022-11-02 20:24:32,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:24:32,766 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 20:24:32,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:32,768 INFO L225 Difference]: With dead ends: 746 [2022-11-02 20:24:32,768 INFO L226 Difference]: Without dead ends: 567 [2022-11-02 20:24:32,768 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 20:24:32,769 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 1258 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:32,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1258 Valid, 1983 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:24:32,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-11-02 20:24:32,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 213. [2022-11-02 20:24:32,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.4245283018867925) internal successors, (302), 212 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 20:24:32,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 302 transitions. [2022-11-02 20:24:32,777 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 302 transitions. Word has length 182 [2022-11-02 20:24:32,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:32,777 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 302 transitions. [2022-11-02 20:24:32,778 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 20:24:32,778 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 302 transitions. [2022-11-02 20:24:32,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:32,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:32,779 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 20:24:32,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-02 20:24:32,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:32,996 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:32,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:32,997 INFO L85 PathProgramCache]: Analyzing trace with hash -598102925, now seen corresponding path program 1 times [2022-11-02 20:24:32,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:32,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95611842] [2022-11-02 20:24:32,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:32,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:32,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:32,999 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:33,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:24:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:33,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:24:33,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:33,538 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 20:24:33,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:33,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:33,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95611842] [2022-11-02 20:24:33,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95611842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:33,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:33,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:33,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958727646] [2022-11-02 20:24:33,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:33,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:33,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:33,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:33,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:33,541 INFO L87 Difference]: Start difference. First operand 213 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 20:24:33,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:33,687 INFO L93 Difference]: Finished difference Result 716 states and 1050 transitions. [2022-11-02 20:24:33,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:33,688 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 20:24:33,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:33,691 INFO L225 Difference]: With dead ends: 716 [2022-11-02 20:24:33,691 INFO L226 Difference]: Without dead ends: 537 [2022-11-02 20:24:33,691 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 20:24:33,692 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 946 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:33,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 1493 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:24:33,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-02 20:24:33,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 215. [2022-11-02 20:24:33,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.4205607476635513) internal successors, (304), 214 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 20:24:33,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 304 transitions. [2022-11-02 20:24:33,700 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 304 transitions. Word has length 182 [2022-11-02 20:24:33,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:33,700 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 304 transitions. [2022-11-02 20:24:33,701 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 20:24:33,701 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 304 transitions. [2022-11-02 20:24:33,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:33,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:33,702 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 20:24:33,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:33,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:33,917 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:33,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:33,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1333022709, now seen corresponding path program 1 times [2022-11-02 20:24:33,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:33,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526349783] [2022-11-02 20:24:33,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:33,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:33,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:33,919 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:33,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:24:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:34,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:24:34,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:34,723 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 20:24:34,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:34,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:34,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526349783] [2022-11-02 20:24:34,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526349783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:34,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:34,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:24:34,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68945394] [2022-11-02 20:24:34,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:34,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:24:34,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:34,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:24:34,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:24:34,726 INFO L87 Difference]: Start difference. First operand 215 states and 304 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 20:24:35,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:35,167 INFO L93 Difference]: Finished difference Result 746 states and 1092 transitions. [2022-11-02 20:24:35,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:24:35,176 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 20:24:35,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:35,181 INFO L225 Difference]: With dead ends: 746 [2022-11-02 20:24:35,181 INFO L226 Difference]: Without dead ends: 567 [2022-11-02 20:24:35,183 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 20:24:35,188 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 1239 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:35,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 1850 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:24:35,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-11-02 20:24:35,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 217. [2022-11-02 20:24:35,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.4166666666666667) internal successors, (306), 216 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:35,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 306 transitions. [2022-11-02 20:24:35,199 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 306 transitions. Word has length 182 [2022-11-02 20:24:35,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:35,199 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 306 transitions. [2022-11-02 20:24:35,200 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 20:24:35,200 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 306 transitions. [2022-11-02 20:24:35,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:35,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:35,201 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 20:24:35,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:35,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:35,415 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:35,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:35,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1064965129, now seen corresponding path program 1 times [2022-11-02 20:24:35,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:35,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852390944] [2022-11-02 20:24:35,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:35,418 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:35,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:35,418 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:35,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:24:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:35,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:24:35,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:36,056 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 20:24:36,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:36,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:36,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852390944] [2022-11-02 20:24:36,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852390944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:36,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:36,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:36,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106424505] [2022-11-02 20:24:36,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:36,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:36,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:36,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:36,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:36,060 INFO L87 Difference]: Start difference. First operand 217 states and 306 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 20:24:36,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:36,247 INFO L93 Difference]: Finished difference Result 730 states and 1067 transitions. [2022-11-02 20:24:36,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:36,247 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 20:24:36,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:36,250 INFO L225 Difference]: With dead ends: 730 [2022-11-02 20:24:36,250 INFO L226 Difference]: Without dead ends: 551 [2022-11-02 20:24:36,251 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 20:24:36,251 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 948 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:36,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 1473 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:24:36,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-11-02 20:24:36,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 223. [2022-11-02 20:24:36,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.4144144144144144) internal successors, (314), 222 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 20:24:36,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 314 transitions. [2022-11-02 20:24:36,257 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 314 transitions. Word has length 182 [2022-11-02 20:24:36,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:36,258 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 314 transitions. [2022-11-02 20:24:36,258 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 20:24:36,258 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 314 transitions. [2022-11-02 20:24:36,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:36,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:36,259 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 20:24:36,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:36,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:36,475 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:36,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:36,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1442132345, now seen corresponding path program 1 times [2022-11-02 20:24:36,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:36,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764607987] [2022-11-02 20:24:36,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:36,478 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:36,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:36,479 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:36,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:24:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:37,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:24:37,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:37,210 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 20:24:37,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:37,210 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:37,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764607987] [2022-11-02 20:24:37,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764607987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:37,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:37,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:24:37,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312626457] [2022-11-02 20:24:37,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:37,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:24:37,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:37,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:24:37,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:24:37,213 INFO L87 Difference]: Start difference. First operand 223 states and 314 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 20:24:37,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:37,515 INFO L93 Difference]: Finished difference Result 715 states and 1046 transitions. [2022-11-02 20:24:37,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:24:37,516 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 20:24:37,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:37,518 INFO L225 Difference]: With dead ends: 715 [2022-11-02 20:24:37,518 INFO L226 Difference]: Without dead ends: 536 [2022-11-02 20:24:37,518 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 20:24:37,519 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 666 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:37,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 949 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:24:37,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-02 20:24:37,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 225. [2022-11-02 20:24:37,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.4107142857142858) internal successors, (316), 224 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 20:24:37,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 316 transitions. [2022-11-02 20:24:37,527 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 316 transitions. Word has length 182 [2022-11-02 20:24:37,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:37,527 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 316 transitions. [2022-11-02 20:24:37,528 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 20:24:37,528 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 316 transitions. [2022-11-02 20:24:37,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:37,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:37,530 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 20:24:37,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:37,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:37,743 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:37,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:37,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1511780219, now seen corresponding path program 1 times [2022-11-02 20:24:37,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:37,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767245348] [2022-11-02 20:24:37,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:37,745 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:37,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:37,746 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:37,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:24:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:38,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:24:38,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:38,452 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 20:24:38,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:38,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:38,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767245348] [2022-11-02 20:24:38,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767245348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:38,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:38,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:38,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044554729] [2022-11-02 20:24:38,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:38,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:38,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:38,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:38,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:38,457 INFO L87 Difference]: Start difference. First operand 225 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 20:24:38,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:38,766 INFO L93 Difference]: Finished difference Result 760 states and 1110 transitions. [2022-11-02 20:24:38,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:38,767 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 20:24:38,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:38,769 INFO L225 Difference]: With dead ends: 760 [2022-11-02 20:24:38,769 INFO L226 Difference]: Without dead ends: 581 [2022-11-02 20:24:38,771 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 20:24:38,772 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 988 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:38,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 1466 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:24:38,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-11-02 20:24:38,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 227. [2022-11-02 20:24:38,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.407079646017699) internal successors, (318), 226 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 20:24:38,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 318 transitions. [2022-11-02 20:24:38,782 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 318 transitions. Word has length 182 [2022-11-02 20:24:38,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:38,782 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 318 transitions. [2022-11-02 20:24:38,783 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 20:24:38,783 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 318 transitions. [2022-11-02 20:24:38,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:38,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:38,785 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 20:24:38,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:39,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:39,004 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:39,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:39,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1384233475, now seen corresponding path program 1 times [2022-11-02 20:24:39,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:39,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785385319] [2022-11-02 20:24:39,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:39,005 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:39,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:39,006 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:39,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:24:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:39,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:24:39,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:39,710 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 20:24:39,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:39,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:39,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785385319] [2022-11-02 20:24:39,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785385319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:39,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:39,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:39,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242142663] [2022-11-02 20:24:39,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:39,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:39,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:39,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:39,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:39,713 INFO L87 Difference]: Start difference. First operand 227 states and 318 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 20:24:40,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:40,032 INFO L93 Difference]: Finished difference Result 760 states and 1109 transitions. [2022-11-02 20:24:40,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:40,033 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 20:24:40,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:40,035 INFO L225 Difference]: With dead ends: 760 [2022-11-02 20:24:40,035 INFO L226 Difference]: Without dead ends: 581 [2022-11-02 20:24:40,035 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 20:24:40,036 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 981 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:40,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 1462 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:24:40,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-11-02 20:24:40,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 229. [2022-11-02 20:24:40,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.4035087719298245) internal successors, (320), 228 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 20:24:40,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 320 transitions. [2022-11-02 20:24:40,043 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 320 transitions. Word has length 182 [2022-11-02 20:24:40,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:40,044 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 320 transitions. [2022-11-02 20:24:40,044 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 20:24:40,044 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 320 transitions. [2022-11-02 20:24:40,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:40,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:40,046 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 20:24:40,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:40,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:40,259 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:40,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:40,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1020766977, now seen corresponding path program 1 times [2022-11-02 20:24:40,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:40,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300630393] [2022-11-02 20:24:40,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:40,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:40,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:40,262 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:40,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:24:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:40,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:24:40,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:40,903 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 20:24:40,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:40,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:40,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300630393] [2022-11-02 20:24:40,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300630393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:40,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:40,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:40,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826811853] [2022-11-02 20:24:40,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:40,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:40,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:40,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:40,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:40,906 INFO L87 Difference]: Start difference. First operand 229 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 20:24:41,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:41,097 INFO L93 Difference]: Finished difference Result 760 states and 1108 transitions. [2022-11-02 20:24:41,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:41,098 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 20:24:41,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:41,100 INFO L225 Difference]: With dead ends: 760 [2022-11-02 20:24:41,100 INFO L226 Difference]: Without dead ends: 581 [2022-11-02 20:24:41,101 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 20:24:41,102 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 976 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:41,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 1501 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:24:41,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-11-02 20:24:41,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 231. [2022-11-02 20:24:41,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.4) internal successors, (322), 230 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 20:24:41,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 322 transitions. [2022-11-02 20:24:41,110 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 322 transitions. Word has length 182 [2022-11-02 20:24:41,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:41,110 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 322 transitions. [2022-11-02 20:24:41,111 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 20:24:41,111 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 322 transitions. [2022-11-02 20:24:41,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:41,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:41,112 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 20:24:41,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:41,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:41,328 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:41,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:41,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1565639551, now seen corresponding path program 1 times [2022-11-02 20:24:41,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:41,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206521568] [2022-11-02 20:24:41,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:41,329 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:41,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:41,330 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:41,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 20:24:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:41,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:24:41,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:41,989 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 20:24:41,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:41,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:41,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206521568] [2022-11-02 20:24:41,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206521568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:41,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:41,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:41,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519118056] [2022-11-02 20:24:41,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:41,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:41,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:41,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:41,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:41,992 INFO L87 Difference]: Start difference. First operand 231 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 20:24:42,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:42,272 INFO L93 Difference]: Finished difference Result 768 states and 1119 transitions. [2022-11-02 20:24:42,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:42,273 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 20:24:42,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:42,275 INFO L225 Difference]: With dead ends: 768 [2022-11-02 20:24:42,275 INFO L226 Difference]: Without dead ends: 589 [2022-11-02 20:24:42,276 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 20:24:42,276 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 978 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:42,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 1462 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:24:42,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-11-02 20:24:42,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 235. [2022-11-02 20:24:42,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.3974358974358974) internal successors, (327), 234 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:42,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 327 transitions. [2022-11-02 20:24:42,284 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 327 transitions. Word has length 182 [2022-11-02 20:24:42,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:42,285 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 327 transitions. [2022-11-02 20:24:42,285 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 20:24:42,285 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 327 transitions. [2022-11-02 20:24:42,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:42,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:42,286 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 20:24:42,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-11-02 20:24:42,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:42,494 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:42,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:42,494 INFO L85 PathProgramCache]: Analyzing trace with hash -2000145149, now seen corresponding path program 1 times [2022-11-02 20:24:42,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:42,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360679587] [2022-11-02 20:24:42,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:42,495 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:42,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:42,496 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:42,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 20:24:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:42,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:24:42,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:43,179 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 20:24:43,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:43,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:43,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360679587] [2022-11-02 20:24:43,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360679587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:43,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:43,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:43,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836936692] [2022-11-02 20:24:43,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:43,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:43,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:43,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:43,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:43,185 INFO L87 Difference]: Start difference. First operand 235 states and 327 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 20:24:43,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:43,447 INFO L93 Difference]: Finished difference Result 768 states and 1118 transitions. [2022-11-02 20:24:43,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:43,451 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 20:24:43,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:43,454 INFO L225 Difference]: With dead ends: 768 [2022-11-02 20:24:43,454 INFO L226 Difference]: Without dead ends: 589 [2022-11-02 20:24:43,454 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 20:24:43,455 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 971 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:43,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 1458 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:24:43,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-11-02 20:24:43,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 237. [2022-11-02 20:24:43,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.3940677966101696) internal successors, (329), 236 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 20:24:43,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 329 transitions. [2022-11-02 20:24:43,470 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 329 transitions. Word has length 182 [2022-11-02 20:24:43,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:43,470 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 329 transitions. [2022-11-02 20:24:43,471 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 20:24:43,471 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 329 transitions. [2022-11-02 20:24:43,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:43,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:43,472 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 20:24:43,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-02 20:24:43,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:43,679 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:43,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:43,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1588225541, now seen corresponding path program 1 times [2022-11-02 20:24:43,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:43,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503845951] [2022-11-02 20:24:43,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:43,681 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:43,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:43,683 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:43,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 20:24:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:44,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:24:44,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:44,396 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 20:24:44,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:44,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:44,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503845951] [2022-11-02 20:24:44,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503845951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:44,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:44,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:44,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854093287] [2022-11-02 20:24:44,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:44,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:44,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:44,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:44,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:44,399 INFO L87 Difference]: Start difference. First operand 237 states and 329 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 20:24:44,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:44,588 INFO L93 Difference]: Finished difference Result 768 states and 1117 transitions. [2022-11-02 20:24:44,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:44,589 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 20:24:44,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:44,592 INFO L225 Difference]: With dead ends: 768 [2022-11-02 20:24:44,592 INFO L226 Difference]: Without dead ends: 589 [2022-11-02 20:24:44,593 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 20:24:44,594 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 966 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:44,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 1497 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:24:44,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-11-02 20:24:44,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 239. [2022-11-02 20:24:44,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.3907563025210083) internal successors, (331), 238 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 20:24:44,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 331 transitions. [2022-11-02 20:24:44,602 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 331 transitions. Word has length 182 [2022-11-02 20:24:44,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:44,603 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 331 transitions. [2022-11-02 20:24:44,603 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 20:24:44,603 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 331 transitions. [2022-11-02 20:24:44,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:44,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:44,605 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 20:24:44,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:44,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:44,824 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:44,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:44,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1844908153, now seen corresponding path program 1 times [2022-11-02 20:24:44,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:44,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445450142] [2022-11-02 20:24:44,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:44,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:44,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:44,827 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:44,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 20:24:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:45,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:24:45,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:45,391 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 20:24:45,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:45,391 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:45,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445450142] [2022-11-02 20:24:45,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445450142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:45,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:45,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:45,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252910350] [2022-11-02 20:24:45,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:45,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:45,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:45,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:45,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:45,394 INFO L87 Difference]: Start difference. First operand 239 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 20:24:45,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:45,538 INFO L93 Difference]: Finished difference Result 716 states and 1040 transitions. [2022-11-02 20:24:45,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:45,539 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 20:24:45,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:45,541 INFO L225 Difference]: With dead ends: 716 [2022-11-02 20:24:45,541 INFO L226 Difference]: Without dead ends: 537 [2022-11-02 20:24:45,542 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 20:24:45,547 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 861 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:45,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1445 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:24:45,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-02 20:24:45,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 241. [2022-11-02 20:24:45,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.3875) internal successors, (333), 240 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 20:24:45,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 333 transitions. [2022-11-02 20:24:45,563 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 333 transitions. Word has length 182 [2022-11-02 20:24:45,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:45,563 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 333 transitions. [2022-11-02 20:24:45,564 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 20:24:45,564 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 333 transitions. [2022-11-02 20:24:45,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:45,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:45,566 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 20:24:45,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:45,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:45,785 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:45,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:45,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1356861047, now seen corresponding path program 1 times [2022-11-02 20:24:45,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:45,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725182398] [2022-11-02 20:24:45,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:45,787 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:45,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:45,788 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:45,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 20:24:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:46,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:24:46,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:46,583 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 20:24:46,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:46,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:46,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725182398] [2022-11-02 20:24:46,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725182398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:46,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:46,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:24:46,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850114944] [2022-11-02 20:24:46,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:46,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:24:46,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:46,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:24:46,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:24:46,586 INFO L87 Difference]: Start difference. First operand 241 states and 333 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 20:24:47,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:47,015 INFO L93 Difference]: Finished difference Result 746 states and 1082 transitions. [2022-11-02 20:24:47,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:24:47,016 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 20:24:47,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:47,019 INFO L225 Difference]: With dead ends: 746 [2022-11-02 20:24:47,019 INFO L226 Difference]: Without dead ends: 567 [2022-11-02 20:24:47,020 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 20:24:47,021 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 1144 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:47,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 1764 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:24:47,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-11-02 20:24:47,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 243. [2022-11-02 20:24:47,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.384297520661157) internal successors, (335), 242 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:47,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 335 transitions. [2022-11-02 20:24:47,029 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 335 transitions. Word has length 182 [2022-11-02 20:24:47,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:47,029 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 335 transitions. [2022-11-02 20:24:47,030 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 20:24:47,030 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 335 transitions. [2022-11-02 20:24:47,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:47,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:47,031 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 20:24:47,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:47,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:47,249 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:47,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:47,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1655933963, now seen corresponding path program 1 times [2022-11-02 20:24:47,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:47,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384721673] [2022-11-02 20:24:47,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:47,250 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:47,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:47,251 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:47,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 20:24:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:47,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:24:47,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:47,916 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 20:24:47,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:47,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:47,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384721673] [2022-11-02 20:24:47,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384721673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:47,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:47,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:24:47,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403458808] [2022-11-02 20:24:47,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:47,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:24:47,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:47,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:24:47,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:24:47,919 INFO L87 Difference]: Start difference. First operand 243 states and 335 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 20:24:48,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:48,164 INFO L93 Difference]: Finished difference Result 730 states and 1057 transitions. [2022-11-02 20:24:48,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:24:48,165 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 20:24:48,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:48,167 INFO L225 Difference]: With dead ends: 730 [2022-11-02 20:24:48,167 INFO L226 Difference]: Without dead ends: 551 [2022-11-02 20:24:48,168 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 20:24:48,168 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 1111 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1853 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 20:24:48,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 1853 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:24:48,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-11-02 20:24:48,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 245. [2022-11-02 20:24:48,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.3811475409836065) internal successors, (337), 244 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:48,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 337 transitions. [2022-11-02 20:24:48,177 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 337 transitions. Word has length 182 [2022-11-02 20:24:48,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:48,177 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 337 transitions. [2022-11-02 20:24:48,178 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 20:24:48,178 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 337 transitions. [2022-11-02 20:24:48,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:48,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:48,179 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 20:24:48,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-11-02 20:24:48,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:48,399 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:48,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:48,400 INFO L85 PathProgramCache]: Analyzing trace with hash -66068723, now seen corresponding path program 1 times [2022-11-02 20:24:48,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:48,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325004926] [2022-11-02 20:24:48,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:48,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:48,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:48,403 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:48,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 20:24:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:48,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:24:48,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:49,223 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 20:24:49,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:49,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:49,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325004926] [2022-11-02 20:24:49,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325004926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:49,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:49,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:49,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871823227] [2022-11-02 20:24:49,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:49,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:49,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:49,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:49,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:49,226 INFO L87 Difference]: Start difference. First operand 245 states and 337 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 20:24:49,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:49,429 INFO L93 Difference]: Finished difference Result 776 states and 1125 transitions. [2022-11-02 20:24:49,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:49,429 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 20:24:49,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:49,431 INFO L225 Difference]: With dead ends: 776 [2022-11-02 20:24:49,431 INFO L226 Difference]: Without dead ends: 597 [2022-11-02 20:24:49,432 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 20:24:49,433 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 948 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:49,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 1489 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:24:49,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2022-11-02 20:24:49,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 249. [2022-11-02 20:24:49,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.3790322580645162) internal successors, (342), 248 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:49,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 342 transitions. [2022-11-02 20:24:49,442 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 342 transitions. Word has length 182 [2022-11-02 20:24:49,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:49,442 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 342 transitions. [2022-11-02 20:24:49,442 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 20:24:49,443 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 342 transitions. [2022-11-02 20:24:49,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:49,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:49,444 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 20:24:49,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:49,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:49,666 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:49,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:49,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1661076239, now seen corresponding path program 1 times [2022-11-02 20:24:49,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:49,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415289407] [2022-11-02 20:24:49,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:49,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:49,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:49,669 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:49,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 20:24:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:50,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:24:50,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:50,436 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 20:24:50,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:50,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:50,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415289407] [2022-11-02 20:24:50,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415289407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:50,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:50,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:50,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876920139] [2022-11-02 20:24:50,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:50,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:50,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:50,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:50,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:50,440 INFO L87 Difference]: Start difference. First operand 249 states and 342 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 20:24:50,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:50,631 INFO L93 Difference]: Finished difference Result 608 states and 875 transitions. [2022-11-02 20:24:50,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:50,632 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 20:24:50,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:50,633 INFO L225 Difference]: With dead ends: 608 [2022-11-02 20:24:50,633 INFO L226 Difference]: Without dead ends: 429 [2022-11-02 20:24:50,633 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 20:24:50,634 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 665 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:50,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 1091 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:24:50,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-11-02 20:24:50,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 251. [2022-11-02 20:24:50,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.376) internal successors, (344), 250 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:50,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 344 transitions. [2022-11-02 20:24:50,642 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 344 transitions. Word has length 182 [2022-11-02 20:24:50,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:50,643 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 344 transitions. [2022-11-02 20:24:50,643 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 20:24:50,643 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 344 transitions. [2022-11-02 20:24:50,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:50,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:50,645 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 20:24:50,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:50,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:50,855 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:50,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:50,856 INFO L85 PathProgramCache]: Analyzing trace with hash -986528115, now seen corresponding path program 1 times [2022-11-02 20:24:50,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:50,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433646520] [2022-11-02 20:24:50,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:50,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:50,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:50,858 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:50,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 20:24:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:51,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:24:51,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:51,661 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 20:24:51,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:51,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:51,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433646520] [2022-11-02 20:24:51,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433646520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:51,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:51,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:51,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038527952] [2022-11-02 20:24:51,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:51,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:51,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:51,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:51,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:51,664 INFO L87 Difference]: Start difference. First operand 251 states and 344 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 20:24:51,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:51,864 INFO L93 Difference]: Finished difference Result 786 states and 1138 transitions. [2022-11-02 20:24:51,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:51,865 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 20:24:51,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:51,867 INFO L225 Difference]: With dead ends: 786 [2022-11-02 20:24:51,868 INFO L226 Difference]: Without dead ends: 607 [2022-11-02 20:24:51,868 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 20:24:51,869 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 948 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:51,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 1492 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:24:51,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-11-02 20:24:51,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 255. [2022-11-02 20:24:51,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.374015748031496) internal successors, (349), 254 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 349 transitions. [2022-11-02 20:24:51,877 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 349 transitions. Word has length 182 [2022-11-02 20:24:51,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:51,878 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 349 transitions. [2022-11-02 20:24:51,878 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 20:24:51,878 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 349 transitions. [2022-11-02 20:24:51,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:51,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:51,880 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 20:24:51,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-11-02 20:24:52,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:52,095 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:52,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:52,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1166578703, now seen corresponding path program 1 times [2022-11-02 20:24:52,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:52,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093478704] [2022-11-02 20:24:52,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:52,097 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:52,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:52,099 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:52,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 20:24:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:52,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:24:52,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:53,194 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 20:24:53,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:53,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:53,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093478704] [2022-11-02 20:24:53,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093478704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:53,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:53,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:24:53,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122507294] [2022-11-02 20:24:53,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:53,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:24:53,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:53,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:24:53,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:24:53,198 INFO L87 Difference]: Start difference. First operand 255 states and 349 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 20:24:53,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:53,374 INFO L93 Difference]: Finished difference Result 715 states and 1033 transitions. [2022-11-02 20:24:53,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:24:53,376 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 20:24:53,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:53,379 INFO L225 Difference]: With dead ends: 715 [2022-11-02 20:24:53,379 INFO L226 Difference]: Without dead ends: 536 [2022-11-02 20:24:53,379 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 20:24:53,380 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 568 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:53,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 990 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:24:53,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-02 20:24:53,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 259. [2022-11-02 20:24:53,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.372093023255814) internal successors, (354), 258 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 20:24:53,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 354 transitions. [2022-11-02 20:24:53,398 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 354 transitions. Word has length 182 [2022-11-02 20:24:53,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:53,398 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 354 transitions. [2022-11-02 20:24:53,399 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 20:24:53,399 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 354 transitions. [2022-11-02 20:24:53,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:53,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:53,407 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 20:24:53,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:53,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:53,623 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:53,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:53,623 INFO L85 PathProgramCache]: Analyzing trace with hash -866815343, now seen corresponding path program 1 times [2022-11-02 20:24:53,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:53,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542413487] [2022-11-02 20:24:53,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:53,625 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:53,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:53,626 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:53,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 20:24:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:54,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:24:54,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:54,585 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 20:24:54,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:54,586 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:54,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542413487] [2022-11-02 20:24:54,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542413487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:54,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:54,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:24:54,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601850197] [2022-11-02 20:24:54,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:54,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:24:54,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:54,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:24:54,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:24:54,589 INFO L87 Difference]: Start difference. First operand 259 states and 354 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 20:24:55,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:55,063 INFO L93 Difference]: Finished difference Result 746 states and 1076 transitions. [2022-11-02 20:24:55,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:24:55,064 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 20:24:55,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:55,065 INFO L225 Difference]: With dead ends: 746 [2022-11-02 20:24:55,066 INFO L226 Difference]: Without dead ends: 567 [2022-11-02 20:24:55,066 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 20:24:55,067 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 1081 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 1706 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 20:24:55,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 1706 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:24:55,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-11-02 20:24:55,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 261. [2022-11-02 20:24:55,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.3692307692307693) internal successors, (356), 260 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 20:24:55,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 356 transitions. [2022-11-02 20:24:55,076 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 356 transitions. Word has length 182 [2022-11-02 20:24:55,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:55,076 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 356 transitions. [2022-11-02 20:24:55,077 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 20:24:55,077 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 356 transitions. [2022-11-02 20:24:55,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:55,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:55,078 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 20:24:55,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-11-02 20:24:55,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:55,291 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:55,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:55,292 INFO L85 PathProgramCache]: Analyzing trace with hash 2121009555, now seen corresponding path program 1 times [2022-11-02 20:24:55,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:55,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643643471] [2022-11-02 20:24:55,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:55,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:55,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:55,294 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:55,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 20:24:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:55,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:24:55,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:56,003 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 20:24:56,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:56,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:56,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643643471] [2022-11-02 20:24:56,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643643471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:56,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:56,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:24:56,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130926023] [2022-11-02 20:24:56,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:56,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:24:56,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:56,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:24:56,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:24:56,005 INFO L87 Difference]: Start difference. First operand 261 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 20:24:56,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:56,216 INFO L93 Difference]: Finished difference Result 730 states and 1051 transitions. [2022-11-02 20:24:56,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:24:56,216 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 20:24:56,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:56,218 INFO L225 Difference]: With dead ends: 730 [2022-11-02 20:24:56,218 INFO L226 Difference]: Without dead ends: 551 [2022-11-02 20:24:56,219 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 20:24:56,220 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 1048 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:56,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 1794 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:24:56,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-11-02 20:24:56,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 263. [2022-11-02 20:24:56,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.366412213740458) internal successors, (358), 262 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 20:24:56,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 358 transitions. [2022-11-02 20:24:56,228 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 358 transitions. Word has length 182 [2022-11-02 20:24:56,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:56,228 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 358 transitions. [2022-11-02 20:24:56,229 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 20:24:56,229 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 358 transitions. [2022-11-02 20:24:56,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:56,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:56,230 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 20:24:56,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-11-02 20:24:56,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:56,450 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:56,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:56,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1142916843, now seen corresponding path program 1 times [2022-11-02 20:24:56,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:56,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950179382] [2022-11-02 20:24:56,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:56,452 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:56,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:56,453 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:56,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 20:24:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:56,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:24:56,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:57,451 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 20:24:57,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:57,452 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:57,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950179382] [2022-11-02 20:24:57,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950179382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:57,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:57,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:57,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650923312] [2022-11-02 20:24:57,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:57,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:57,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:57,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:57,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:57,454 INFO L87 Difference]: Start difference. First operand 263 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 20:24:57,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:57,672 INFO L93 Difference]: Finished difference Result 794 states and 1146 transitions. [2022-11-02 20:24:57,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:57,673 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 20:24:57,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:57,674 INFO L225 Difference]: With dead ends: 794 [2022-11-02 20:24:57,674 INFO L226 Difference]: Without dead ends: 615 [2022-11-02 20:24:57,675 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 20:24:57,675 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 921 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:57,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 1478 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:24:57,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-11-02 20:24:57,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 267. [2022-11-02 20:24:57,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.3646616541353382) internal successors, (363), 266 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:57,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 363 transitions. [2022-11-02 20:24:57,682 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 363 transitions. Word has length 182 [2022-11-02 20:24:57,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:57,683 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 363 transitions. [2022-11-02 20:24:57,683 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 20:24:57,683 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 363 transitions. [2022-11-02 20:24:57,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:57,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:57,685 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 20:24:57,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:57,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:57,905 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:57,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:57,906 INFO L85 PathProgramCache]: Analyzing trace with hash 208468375, now seen corresponding path program 1 times [2022-11-02 20:24:57,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:57,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74827954] [2022-11-02 20:24:57,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:57,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:57,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:57,909 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:57,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 20:24:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:58,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:24:58,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:58,783 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 20:24:58,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:58,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:58,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74827954] [2022-11-02 20:24:58,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74827954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:58,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:58,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:24:58,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711004670] [2022-11-02 20:24:58,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:58,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:24:58,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:58,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:24:58,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:24:58,785 INFO L87 Difference]: Start difference. First operand 267 states and 363 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 20:24:59,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:59,238 INFO L93 Difference]: Finished difference Result 746 states and 1073 transitions. [2022-11-02 20:24:59,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:24:59,239 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 20:24:59,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:59,242 INFO L225 Difference]: With dead ends: 746 [2022-11-02 20:24:59,242 INFO L226 Difference]: Without dead ends: 567 [2022-11-02 20:24:59,243 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 20:24:59,243 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 1047 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:59,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 1674 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:24:59,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-11-02 20:24:59,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 271. [2022-11-02 20:24:59,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.362962962962963) internal successors, (368), 270 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:59,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 368 transitions. [2022-11-02 20:24:59,249 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 368 transitions. Word has length 182 [2022-11-02 20:24:59,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:59,249 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 368 transitions. [2022-11-02 20:24:59,250 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 20:24:59,250 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 368 transitions. [2022-11-02 20:24:59,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:24:59,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:59,251 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 20:24:59,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-11-02 20:24:59,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:59,451 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:59,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:59,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1732113639, now seen corresponding path program 1 times [2022-11-02 20:24:59,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:59,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993559310] [2022-11-02 20:24:59,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:59,453 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:59,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:59,454 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:59,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 20:24:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:59,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:24:59,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:00,156 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 20:25:00,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:00,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:00,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993559310] [2022-11-02 20:25:00,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993559310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:00,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:00,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:25:00,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055012979] [2022-11-02 20:25:00,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:00,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:25:00,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:00,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:25:00,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:25:00,159 INFO L87 Difference]: Start difference. First operand 271 states and 368 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 20:25:00,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:00,426 INFO L93 Difference]: Finished difference Result 730 states and 1048 transitions. [2022-11-02 20:25:00,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:25:00,426 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 20:25:00,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:00,428 INFO L225 Difference]: With dead ends: 730 [2022-11-02 20:25:00,428 INFO L226 Difference]: Without dead ends: 551 [2022-11-02 20:25:00,428 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 20:25:00,429 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1014 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 1761 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 20:25:00,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 1761 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:25:00,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-11-02 20:25:00,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 273. [2022-11-02 20:25:00,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.3602941176470589) internal successors, (370), 272 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 20:25:00,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 370 transitions. [2022-11-02 20:25:00,434 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 370 transitions. Word has length 182 [2022-11-02 20:25:00,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:00,434 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 370 transitions. [2022-11-02 20:25:00,434 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 20:25:00,434 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 370 transitions. [2022-11-02 20:25:00,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:00,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:00,435 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 20:25:00,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-11-02 20:25:00,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:00,636 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:00,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:00,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1792120091, now seen corresponding path program 1 times [2022-11-02 20:25:00,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:00,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095197612] [2022-11-02 20:25:00,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:00,639 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:00,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:00,640 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:00,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 20:25:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:01,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:25:01,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:01,556 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 20:25:01,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:01,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:01,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095197612] [2022-11-02 20:25:01,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095197612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:01,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:01,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:25:01,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820086837] [2022-11-02 20:25:01,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:01,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:25:01,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:01,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:25:01,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:25:01,559 INFO L87 Difference]: Start difference. First operand 273 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 20:25:01,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:01,782 INFO L93 Difference]: Finished difference Result 802 states and 1155 transitions. [2022-11-02 20:25:01,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:25:01,783 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 20:25:01,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:01,786 INFO L225 Difference]: With dead ends: 802 [2022-11-02 20:25:01,786 INFO L226 Difference]: Without dead ends: 623 [2022-11-02 20:25:01,787 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 20:25:01,788 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 913 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 1472 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 20:25:01,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 1472 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:25:01,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2022-11-02 20:25:01,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 275. [2022-11-02 20:25:01,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.3576642335766422) internal successors, (372), 274 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 20:25:01,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 372 transitions. [2022-11-02 20:25:01,796 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 372 transitions. Word has length 182 [2022-11-02 20:25:01,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:01,796 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 372 transitions. [2022-11-02 20:25:01,797 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 20:25:01,797 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 372 transitions. [2022-11-02 20:25:01,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:01,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:01,798 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 20:25:01,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-11-02 20:25:02,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:02,011 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:02,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:02,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1205843869, now seen corresponding path program 1 times [2022-11-02 20:25:02,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:02,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011731428] [2022-11-02 20:25:02,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:02,016 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:02,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:02,017 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:02,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 20:25:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:02,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:02,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:03,179 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 20:25:03,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:03,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:03,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011731428] [2022-11-02 20:25:03,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011731428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:03,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:03,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:03,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273260564] [2022-11-02 20:25:03,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:03,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:03,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:03,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:03,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:03,182 INFO L87 Difference]: Start difference. First operand 275 states and 372 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 20:25:03,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:03,348 INFO L93 Difference]: Finished difference Result 715 states and 1026 transitions. [2022-11-02 20:25:03,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:03,349 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 20:25:03,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:03,350 INFO L225 Difference]: With dead ends: 715 [2022-11-02 20:25:03,350 INFO L226 Difference]: Without dead ends: 536 [2022-11-02 20:25:03,351 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 20:25:03,351 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 516 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 983 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 20:25:03,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 983 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:03,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-02 20:25:03,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 277. [2022-11-02 20:25:03,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.355072463768116) internal successors, (374), 276 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 20:25:03,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 374 transitions. [2022-11-02 20:25:03,360 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 374 transitions. Word has length 182 [2022-11-02 20:25:03,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:03,360 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 374 transitions. [2022-11-02 20:25:03,360 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 20:25:03,360 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 374 transitions. [2022-11-02 20:25:03,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:03,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:03,362 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 20:25:03,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-11-02 20:25:03,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:03,562 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:03,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:03,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1212640609, now seen corresponding path program 1 times [2022-11-02 20:25:03,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:03,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762398992] [2022-11-02 20:25:03,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:03,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:03,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:03,565 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:03,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-02 20:25:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:04,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:25:04,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:04,298 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 20:25:04,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:04,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:04,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762398992] [2022-11-02 20:25:04,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762398992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:04,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:04,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:25:04,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377211425] [2022-11-02 20:25:04,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:04,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:25:04,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:04,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:25:04,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:25:04,300 INFO L87 Difference]: Start difference. First operand 277 states and 374 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 20:25:04,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:04,545 INFO L93 Difference]: Finished difference Result 730 states and 1045 transitions. [2022-11-02 20:25:04,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:25:04,546 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 20:25:04,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:04,547 INFO L225 Difference]: With dead ends: 730 [2022-11-02 20:25:04,548 INFO L226 Difference]: Without dead ends: 551 [2022-11-02 20:25:04,548 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 20:25:04,549 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 990 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 1740 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 20:25:04,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 1740 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:25:04,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-11-02 20:25:04,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 279. [2022-11-02 20:25:04,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.3525179856115108) internal successors, (376), 278 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 20:25:04,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 376 transitions. [2022-11-02 20:25:04,557 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 376 transitions. Word has length 182 [2022-11-02 20:25:04,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:04,557 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 376 transitions. [2022-11-02 20:25:04,557 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 20:25:04,558 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 376 transitions. [2022-11-02 20:25:04,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:04,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:04,559 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 20:25:04,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-02 20:25:04,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:04,774 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:04,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:04,775 INFO L85 PathProgramCache]: Analyzing trace with hash 112215585, now seen corresponding path program 1 times [2022-11-02 20:25:04,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:04,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588362789] [2022-11-02 20:25:04,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:04,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:04,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:04,777 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:04,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-02 20:25:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:05,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:25:05,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:05,663 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 20:25:05,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:05,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:05,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588362789] [2022-11-02 20:25:05,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588362789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:05,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:05,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:25:05,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437622854] [2022-11-02 20:25:05,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:05,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:25:05,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:05,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:25:05,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:25:05,666 INFO L87 Difference]: Start difference. First operand 279 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 20:25:05,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:05,890 INFO L93 Difference]: Finished difference Result 812 states and 1167 transitions. [2022-11-02 20:25:05,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:25:05,891 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 20:25:05,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:05,892 INFO L225 Difference]: With dead ends: 812 [2022-11-02 20:25:05,893 INFO L226 Difference]: Without dead ends: 633 [2022-11-02 20:25:05,893 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 20:25:05,893 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 911 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 1474 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 20:25:05,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 1474 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:25:05,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-11-02 20:25:05,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 281. [2022-11-02 20:25:05,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.35) internal successors, (378), 280 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 20:25:05,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 378 transitions. [2022-11-02 20:25:05,901 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 378 transitions. Word has length 182 [2022-11-02 20:25:05,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:05,902 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 378 transitions. [2022-11-02 20:25:05,902 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 20:25:05,902 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 378 transitions. [2022-11-02 20:25:05,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:05,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:05,904 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 20:25:05,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-11-02 20:25:06,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:06,119 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:06,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:06,120 INFO L85 PathProgramCache]: Analyzing trace with hash -945622493, now seen corresponding path program 1 times [2022-11-02 20:25:06,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:06,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146907600] [2022-11-02 20:25:06,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:06,121 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:06,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:06,124 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:06,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-02 20:25:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:06,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:06,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:07,225 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 20:25:07,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:07,226 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:07,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146907600] [2022-11-02 20:25:07,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146907600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:07,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:07,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:25:07,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202489989] [2022-11-02 20:25:07,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:07,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:25:07,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:07,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:25:07,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:25:07,229 INFO L87 Difference]: Start difference. First operand 281 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 20:25:07,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:07,425 INFO L93 Difference]: Finished difference Result 812 states and 1166 transitions. [2022-11-02 20:25:07,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:25:07,425 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 20:25:07,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:07,427 INFO L225 Difference]: With dead ends: 812 [2022-11-02 20:25:07,427 INFO L226 Difference]: Without dead ends: 633 [2022-11-02 20:25:07,427 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 20:25:07,428 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 897 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 1482 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 20:25:07,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 1482 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:25:07,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-11-02 20:25:07,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 285. [2022-11-02 20:25:07,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.3485915492957747) internal successors, (383), 284 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:07,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 383 transitions. [2022-11-02 20:25:07,434 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 383 transitions. Word has length 182 [2022-11-02 20:25:07,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:07,435 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 383 transitions. [2022-11-02 20:25:07,435 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 20:25:07,435 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 383 transitions. [2022-11-02 20:25:07,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:07,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:07,436 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 20:25:07,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-11-02 20:25:07,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:07,636 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:07,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:07,637 INFO L85 PathProgramCache]: Analyzing trace with hash -918556891, now seen corresponding path program 1 times [2022-11-02 20:25:07,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:07,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303969787] [2022-11-02 20:25:07,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:07,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:07,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:07,638 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:07,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-02 20:25:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:08,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:25:08,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:08,280 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 20:25:08,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:08,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:08,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303969787] [2022-11-02 20:25:08,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303969787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:08,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:08,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:25:08,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067016377] [2022-11-02 20:25:08,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:08,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:25:08,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:08,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:25:08,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:25:08,282 INFO L87 Difference]: Start difference. First operand 285 states and 383 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 20:25:08,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:08,479 INFO L93 Difference]: Finished difference Result 730 states and 1042 transitions. [2022-11-02 20:25:08,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:25:08,479 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 20:25:08,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:08,482 INFO L225 Difference]: With dead ends: 730 [2022-11-02 20:25:08,482 INFO L226 Difference]: Without dead ends: 551 [2022-11-02 20:25:08,483 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 20:25:08,483 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 961 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:08,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 1713 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:08,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-11-02 20:25:08,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 287. [2022-11-02 20:25:08,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.3461538461538463) internal successors, (385), 286 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 20:25:08,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 385 transitions. [2022-11-02 20:25:08,488 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 385 transitions. Word has length 182 [2022-11-02 20:25:08,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:08,488 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 385 transitions. [2022-11-02 20:25:08,488 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 20:25:08,489 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 385 transitions. [2022-11-02 20:25:08,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:08,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:08,490 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 20:25:08,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-11-02 20:25:08,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:08,697 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:08,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:08,697 INFO L85 PathProgramCache]: Analyzing trace with hash 815547559, now seen corresponding path program 1 times [2022-11-02 20:25:08,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:08,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273401642] [2022-11-02 20:25:08,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:08,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:08,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:08,700 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:08,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-02 20:25:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:09,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:25:09,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:09,518 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 20:25:09,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:09,518 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:09,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273401642] [2022-11-02 20:25:09,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273401642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:09,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:09,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:25:09,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716022884] [2022-11-02 20:25:09,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:09,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:25:09,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:09,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:25:09,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:25:09,522 INFO L87 Difference]: Start difference. First operand 287 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 20:25:09,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:09,716 INFO L93 Difference]: Finished difference Result 820 states and 1176 transitions. [2022-11-02 20:25:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:25:09,717 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 20:25:09,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:09,718 INFO L225 Difference]: With dead ends: 820 [2022-11-02 20:25:09,718 INFO L226 Difference]: Without dead ends: 641 [2022-11-02 20:25:09,719 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 20:25:09,720 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 900 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1470 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 20:25:09,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 1470 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:25:09,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-11-02 20:25:09,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 289. [2022-11-02 20:25:09,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.34375) internal successors, (387), 288 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 20:25:09,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 387 transitions. [2022-11-02 20:25:09,728 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 387 transitions. Word has length 182 [2022-11-02 20:25:09,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:09,728 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 387 transitions. [2022-11-02 20:25:09,728 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 20:25:09,729 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 387 transitions. [2022-11-02 20:25:09,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:09,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:09,730 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 20:25:09,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:09,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:09,939 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:09,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:09,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1095494999, now seen corresponding path program 1 times [2022-11-02 20:25:09,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:09,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513326450] [2022-11-02 20:25:09,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:09,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:09,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:09,942 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:09,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-02 20:25:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:10,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:25:10,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:10,999 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 20:25:11,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:11,000 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:11,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513326450] [2022-11-02 20:25:11,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513326450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:11,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:11,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:25:11,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080018449] [2022-11-02 20:25:11,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:11,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:25:11,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:11,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:25:11,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:25:11,008 INFO L87 Difference]: Start difference. First operand 289 states and 387 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 20:25:12,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:12,044 INFO L93 Difference]: Finished difference Result 1254 states and 1807 transitions. [2022-11-02 20:25:12,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:25:12,045 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 20:25:12,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:12,049 INFO L225 Difference]: With dead ends: 1254 [2022-11-02 20:25:12,050 INFO L226 Difference]: Without dead ends: 1075 [2022-11-02 20:25:12,050 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 20:25:12,051 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 2435 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2435 SdHoareTripleChecker+Valid, 3899 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 20:25:12,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2435 Valid, 3899 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:25:12,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2022-11-02 20:25:12,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 339. [2022-11-02 20:25:12,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.334319526627219) internal successors, (451), 338 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:12,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 451 transitions. [2022-11-02 20:25:12,066 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 451 transitions. Word has length 182 [2022-11-02 20:25:12,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:12,066 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 451 transitions. [2022-11-02 20:25:12,066 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 20:25:12,067 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 451 transitions. [2022-11-02 20:25:12,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:12,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:12,068 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 20:25:12,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:12,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:12,269 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:12,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:12,269 INFO L85 PathProgramCache]: Analyzing trace with hash -2062845653, now seen corresponding path program 1 times [2022-11-02 20:25:12,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:12,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678802320] [2022-11-02 20:25:12,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:12,271 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:12,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:12,272 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:12,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-02 20:25:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:12,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:12,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:13,459 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 20:25:13,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:13,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:13,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678802320] [2022-11-02 20:25:13,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678802320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:13,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:13,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:25:13,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540416369] [2022-11-02 20:25:13,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:13,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:25:13,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:13,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:25:13,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:25:13,463 INFO L87 Difference]: Start difference. First operand 339 states and 451 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 20:25:13,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:13,681 INFO L93 Difference]: Finished difference Result 898 states and 1278 transitions. [2022-11-02 20:25:13,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:25:13,682 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 20:25:13,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:13,694 INFO L225 Difference]: With dead ends: 898 [2022-11-02 20:25:13,700 INFO L226 Difference]: Without dead ends: 693 [2022-11-02 20:25:13,701 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 20:25:13,701 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 837 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:13,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 1445 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:25:13,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-11-02 20:25:13,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 345. [2022-11-02 20:25:13,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.3313953488372092) internal successors, (458), 344 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:13,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 458 transitions. [2022-11-02 20:25:13,715 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 458 transitions. Word has length 182 [2022-11-02 20:25:13,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:13,716 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 458 transitions. [2022-11-02 20:25:13,716 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 20:25:13,716 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 458 transitions. [2022-11-02 20:25:13,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:13,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:13,718 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 20:25:13,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:13,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:13,940 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:13,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:13,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1739495469, now seen corresponding path program 1 times [2022-11-02 20:25:13,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:13,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179262423] [2022-11-02 20:25:13,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:13,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:13,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:13,943 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:13,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-02 20:25:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:14,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:25:14,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:14,856 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 20:25:14,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:14,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:14,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179262423] [2022-11-02 20:25:14,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179262423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:14,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:14,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:25:14,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942156990] [2022-11-02 20:25:14,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:14,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:25:14,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:14,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:25:14,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:25:14,861 INFO L87 Difference]: Start difference. First operand 345 states and 458 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 20:25:15,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:15,310 INFO L93 Difference]: Finished difference Result 850 states and 1205 transitions. [2022-11-02 20:25:15,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:25:15,311 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 20:25:15,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:15,313 INFO L225 Difference]: With dead ends: 850 [2022-11-02 20:25:15,313 INFO L226 Difference]: Without dead ends: 645 [2022-11-02 20:25:15,314 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 20:25:15,314 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 957 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 1595 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 20:25:15,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 1595 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:25:15,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-11-02 20:25:15,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 347. [2022-11-02 20:25:15,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.329479768786127) internal successors, (460), 346 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 20:25:15,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 460 transitions. [2022-11-02 20:25:15,324 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 460 transitions. Word has length 182 [2022-11-02 20:25:15,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:15,325 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 460 transitions. [2022-11-02 20:25:15,325 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 20:25:15,325 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 460 transitions. [2022-11-02 20:25:15,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:15,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:15,327 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 20:25:15,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:15,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:15,547 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:15,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:15,547 INFO L85 PathProgramCache]: Analyzing trace with hash 523341743, now seen corresponding path program 1 times [2022-11-02 20:25:15,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:15,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897714772] [2022-11-02 20:25:15,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:15,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:15,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:15,549 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:15,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-02 20:25:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:16,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:25:16,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:16,536 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 20:25:16,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:16,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:16,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897714772] [2022-11-02 20:25:16,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897714772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:16,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:16,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:25:16,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250730405] [2022-11-02 20:25:16,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:16,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:25:16,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:16,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:25:16,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:25:16,538 INFO L87 Difference]: Start difference. First operand 347 states and 460 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 20:25:16,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:16,769 INFO L93 Difference]: Finished difference Result 958 states and 1365 transitions. [2022-11-02 20:25:16,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:25:16,770 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 20:25:16,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:16,772 INFO L225 Difference]: With dead ends: 958 [2022-11-02 20:25:16,772 INFO L226 Difference]: Without dead ends: 753 [2022-11-02 20:25:16,773 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 20:25:16,773 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 884 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1463 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 20:25:16,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1463 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:25:16,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-11-02 20:25:16,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 351. [2022-11-02 20:25:16,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.3285714285714285) internal successors, (465), 350 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:16,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 465 transitions. [2022-11-02 20:25:16,783 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 465 transitions. Word has length 182 [2022-11-02 20:25:16,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:16,784 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 465 transitions. [2022-11-02 20:25:16,784 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 20:25:16,784 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 465 transitions. [2022-11-02 20:25:16,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:16,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:16,786 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 20:25:16,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-11-02 20:25:16,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:16,991 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:16,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:16,992 INFO L85 PathProgramCache]: Analyzing trace with hash 105945137, now seen corresponding path program 1 times [2022-11-02 20:25:16,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:16,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041078195] [2022-11-02 20:25:16,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:16,993 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:16,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:16,994 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:16,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-02 20:25:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:17,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:17,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:18,161 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 20:25:18,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:18,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:18,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041078195] [2022-11-02 20:25:18,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041078195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:18,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:18,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:25:18,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342609213] [2022-11-02 20:25:18,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:18,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:25:18,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:18,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:25:18,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:25:18,164 INFO L87 Difference]: Start difference. First operand 351 states and 465 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 20:25:18,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:18,460 INFO L93 Difference]: Finished difference Result 907 states and 1288 transitions. [2022-11-02 20:25:18,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:25:18,461 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 20:25:18,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:18,463 INFO L225 Difference]: With dead ends: 907 [2022-11-02 20:25:18,463 INFO L226 Difference]: Without dead ends: 702 [2022-11-02 20:25:18,464 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 20:25:18,464 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1072 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:18,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 1882 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:25:18,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-11-02 20:25:18,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 353. [2022-11-02 20:25:18,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.3267045454545454) internal successors, (467), 352 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 20:25:18,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 467 transitions. [2022-11-02 20:25:18,475 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 467 transitions. Word has length 182 [2022-11-02 20:25:18,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:18,476 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 467 transitions. [2022-11-02 20:25:18,476 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 20:25:18,476 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 467 transitions. [2022-11-02 20:25:18,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:18,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:18,478 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 20:25:18,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:18,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:18,687 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:18,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:18,688 INFO L85 PathProgramCache]: Analyzing trace with hash 2067519795, now seen corresponding path program 1 times [2022-11-02 20:25:18,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:18,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495141019] [2022-11-02 20:25:18,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:18,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:18,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:18,690 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:18,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-02 20:25:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:19,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:25:19,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:19,626 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 20:25:19,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:19,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:19,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495141019] [2022-11-02 20:25:19,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495141019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:19,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:19,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:25:19,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213157295] [2022-11-02 20:25:19,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:19,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:25:19,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:19,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:25:19,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:25:19,628 INFO L87 Difference]: Start difference. First operand 353 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 20:25:20,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:20,085 INFO L93 Difference]: Finished difference Result 850 states and 1202 transitions. [2022-11-02 20:25:20,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:25:20,086 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 20:25:20,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:20,088 INFO L225 Difference]: With dead ends: 850 [2022-11-02 20:25:20,088 INFO L226 Difference]: Without dead ends: 645 [2022-11-02 20:25:20,089 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 20:25:20,090 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 923 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:20,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1563 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:25:20,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-11-02 20:25:20,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 357. [2022-11-02 20:25:20,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.3258426966292134) internal successors, (472), 356 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:20,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 472 transitions. [2022-11-02 20:25:20,099 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 472 transitions. Word has length 182 [2022-11-02 20:25:20,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:20,100 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 472 transitions. [2022-11-02 20:25:20,100 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 20:25:20,100 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 472 transitions. [2022-11-02 20:25:20,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:20,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:20,102 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 20:25:20,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2022-11-02 20:25:20,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:20,315 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:20,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:20,316 INFO L85 PathProgramCache]: Analyzing trace with hash -966530251, now seen corresponding path program 1 times [2022-11-02 20:25:20,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:20,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565480969] [2022-11-02 20:25:20,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:20,317 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:20,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:20,319 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:20,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-02 20:25:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:20,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:25:20,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:21,083 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 20:25:21,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:21,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:21,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565480969] [2022-11-02 20:25:21,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565480969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:21,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:21,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:25:21,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254337815] [2022-11-02 20:25:21,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:21,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:25:21,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:21,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:25:21,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:25:21,088 INFO L87 Difference]: Start difference. First operand 357 states and 472 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 20:25:21,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:21,321 INFO L93 Difference]: Finished difference Result 834 states and 1177 transitions. [2022-11-02 20:25:21,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:25:21,322 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 20:25:21,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:21,323 INFO L225 Difference]: With dead ends: 834 [2022-11-02 20:25:21,323 INFO L226 Difference]: Without dead ends: 629 [2022-11-02 20:25:21,324 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 20:25:21,324 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 890 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 1646 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 20:25:21,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 1646 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:25:21,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-11-02 20:25:21,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 359. [2022-11-02 20:25:21,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.324022346368715) internal successors, (474), 358 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 20:25:21,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 474 transitions. [2022-11-02 20:25:21,333 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 474 transitions. Word has length 182 [2022-11-02 20:25:21,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:21,333 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 474 transitions. [2022-11-02 20:25:21,334 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 20:25:21,334 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 474 transitions. [2022-11-02 20:25:21,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:21,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:21,335 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 20:25:21,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:21,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:21,551 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:21,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:21,552 INFO L85 PathProgramCache]: Analyzing trace with hash 420255159, now seen corresponding path program 1 times [2022-11-02 20:25:21,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:21,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464436080] [2022-11-02 20:25:21,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:21,553 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:21,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:21,554 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:21,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-02 20:25:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:22,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:25:22,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:22,539 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 20:25:22,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:22,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:22,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464436080] [2022-11-02 20:25:22,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464436080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:22,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:22,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:25:22,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740383335] [2022-11-02 20:25:22,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:22,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:25:22,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:22,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:25:22,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:25:22,542 INFO L87 Difference]: Start difference. First operand 359 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 20:25:22,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:22,749 INFO L93 Difference]: Finished difference Result 966 states and 1373 transitions. [2022-11-02 20:25:22,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:25:22,750 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 20:25:22,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:22,752 INFO L225 Difference]: With dead ends: 966 [2022-11-02 20:25:22,752 INFO L226 Difference]: Without dead ends: 761 [2022-11-02 20:25:22,752 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 20:25:22,753 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 866 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 1455 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 20:25:22,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 1455 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:25:22,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-11-02 20:25:22,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 361. [2022-11-02 20:25:22,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.3222222222222222) internal successors, (476), 360 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 20:25:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 476 transitions. [2022-11-02 20:25:22,764 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 476 transitions. Word has length 182 [2022-11-02 20:25:22,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:22,764 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 476 transitions. [2022-11-02 20:25:22,764 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 20:25:22,764 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 476 transitions. [2022-11-02 20:25:22,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:22,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:22,766 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 20:25:22,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2022-11-02 20:25:22,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:22,983 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:22,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:22,984 INFO L85 PathProgramCache]: Analyzing trace with hash 864155833, now seen corresponding path program 1 times [2022-11-02 20:25:22,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:22,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810300665] [2022-11-02 20:25:22,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:22,985 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:22,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:22,986 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:22,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-02 20:25:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:23,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:23,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:24,276 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 20:25:24,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:24,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:24,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810300665] [2022-11-02 20:25:24,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810300665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:24,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:24,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:25:24,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808407053] [2022-11-02 20:25:24,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:24,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:25:24,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:24,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:25:24,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:25:24,280 INFO L87 Difference]: Start difference. First operand 361 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 20:25:24,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:24,503 INFO L93 Difference]: Finished difference Result 927 states and 1314 transitions. [2022-11-02 20:25:24,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:25:24,504 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 20:25:24,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:24,505 INFO L225 Difference]: With dead ends: 927 [2022-11-02 20:25:24,505 INFO L226 Difference]: Without dead ends: 722 [2022-11-02 20:25:24,506 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 20:25:24,507 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 812 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1433 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 20:25:24,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 1433 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:25:24,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-11-02 20:25:24,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 363. [2022-11-02 20:25:24,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.3204419889502763) internal successors, (478), 362 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 20:25:24,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 478 transitions. [2022-11-02 20:25:24,518 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 478 transitions. Word has length 182 [2022-11-02 20:25:24,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:24,519 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 478 transitions. [2022-11-02 20:25:24,519 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 20:25:24,519 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 478 transitions. [2022-11-02 20:25:24,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:24,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:24,521 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 20:25:24,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:24,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:24,739 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:24,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:24,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1164430277, now seen corresponding path program 1 times [2022-11-02 20:25:24,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:24,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103487541] [2022-11-02 20:25:24,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:24,741 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:24,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:24,742 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:24,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-02 20:25:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:25,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:25:25,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:25,513 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 20:25:25,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:25,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:25,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103487541] [2022-11-02 20:25:25,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103487541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:25,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:25,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:25:25,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075451246] [2022-11-02 20:25:25,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:25,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:25:25,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:25,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:25:25,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:25:25,520 INFO L87 Difference]: Start difference. First operand 363 states and 478 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 20:25:25,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:25,734 INFO L93 Difference]: Finished difference Result 834 states and 1174 transitions. [2022-11-02 20:25:25,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:25:25,735 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 20:25:25,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:25,736 INFO L225 Difference]: With dead ends: 834 [2022-11-02 20:25:25,736 INFO L226 Difference]: Without dead ends: 629 [2022-11-02 20:25:25,736 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 20:25:25,737 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 866 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 1625 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 20:25:25,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 1625 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:25:25,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-11-02 20:25:25,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 365. [2022-11-02 20:25:25,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.3186813186813187) internal successors, (480), 364 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 20:25:25,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 480 transitions. [2022-11-02 20:25:25,746 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 480 transitions. Word has length 182 [2022-11-02 20:25:25,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:25,746 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 480 transitions. [2022-11-02 20:25:25,747 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 20:25:25,747 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 480 transitions. [2022-11-02 20:25:25,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:25,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:25,748 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 20:25:25,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2022-11-02 20:25:25,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:25,963 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:25,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:25,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1179948995, now seen corresponding path program 1 times [2022-11-02 20:25:25,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:25,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18587834] [2022-11-02 20:25:25,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:25,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:25,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:25,967 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:25,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-02 20:25:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:26,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:25:26,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:27,035 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 20:25:27,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:27,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:27,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18587834] [2022-11-02 20:25:27,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [18587834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:27,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:27,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:25:27,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393227938] [2022-11-02 20:25:27,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:27,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:25:27,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:27,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:25:27,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:25:27,040 INFO L87 Difference]: Start difference. First operand 365 states and 480 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 20:25:27,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:27,971 INFO L93 Difference]: Finished difference Result 1354 states and 1935 transitions. [2022-11-02 20:25:27,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:25:27,972 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 20:25:27,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:27,974 INFO L225 Difference]: With dead ends: 1354 [2022-11-02 20:25:27,974 INFO L226 Difference]: Without dead ends: 1149 [2022-11-02 20:25:27,975 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 20:25:27,975 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 2492 mSDsluCounter, 3533 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2492 SdHoareTripleChecker+Valid, 3962 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:27,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2492 Valid, 3962 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:25:27,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2022-11-02 20:25:27,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 413. [2022-11-02 20:25:27,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.3155339805825244) internal successors, (542), 412 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:27,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 542 transitions. [2022-11-02 20:25:27,986 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 542 transitions. Word has length 182 [2022-11-02 20:25:27,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:27,987 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 542 transitions. [2022-11-02 20:25:27,987 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 20:25:27,987 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 542 transitions. [2022-11-02 20:25:27,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:27,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:27,989 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 20:25:28,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:28,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:28,209 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:28,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:28,210 INFO L85 PathProgramCache]: Analyzing trace with hash -286462657, now seen corresponding path program 1 times [2022-11-02 20:25:28,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:28,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973314475] [2022-11-02 20:25:28,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:28,211 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:28,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:28,212 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:28,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-02 20:25:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:28,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:28,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:29,280 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 20:25:29,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:29,280 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:29,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973314475] [2022-11-02 20:25:29,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973314475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:29,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:29,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:25:29,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229831460] [2022-11-02 20:25:29,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:29,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:25:29,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:29,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:25:29,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:25:29,282 INFO L87 Difference]: Start difference. First operand 413 states and 542 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 20:25:30,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:30,339 INFO L93 Difference]: Finished difference Result 1606 states and 2292 transitions. [2022-11-02 20:25:30,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:25:30,340 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 20:25:30,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:30,342 INFO L225 Difference]: With dead ends: 1606 [2022-11-02 20:25:30,342 INFO L226 Difference]: Without dead ends: 1375 [2022-11-02 20:25:30,343 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 20:25:30,344 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 2760 mSDsluCounter, 2393 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2760 SdHoareTripleChecker+Valid, 2829 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 20:25:30,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2760 Valid, 2829 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:25:30,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2022-11-02 20:25:30,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 493. [2022-11-02 20:25:30,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 1.3211382113821137) internal successors, (650), 492 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:30,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 650 transitions. [2022-11-02 20:25:30,358 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 650 transitions. Word has length 182 [2022-11-02 20:25:30,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:30,359 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 650 transitions. [2022-11-02 20:25:30,359 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 20:25:30,359 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 650 transitions. [2022-11-02 20:25:30,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:30,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:30,360 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 20:25:30,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2022-11-02 20:25:30,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:30,577 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:30,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:30,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1183855935, now seen corresponding path program 1 times [2022-11-02 20:25:30,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:30,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412420052] [2022-11-02 20:25:30,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:30,579 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:30,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:30,580 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:30,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-02 20:25:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:31,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:31,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:31,637 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 20:25:31,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:31,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:31,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412420052] [2022-11-02 20:25:31,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412420052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:31,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:31,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:25:31,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984098961] [2022-11-02 20:25:31,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:31,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:25:31,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:31,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:25:31,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:25:31,640 INFO L87 Difference]: Start difference. First operand 493 states and 650 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 20:25:32,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:32,600 INFO L93 Difference]: Finished difference Result 1666 states and 2377 transitions. [2022-11-02 20:25:32,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:25:32,601 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 20:25:32,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:32,603 INFO L225 Difference]: With dead ends: 1666 [2022-11-02 20:25:32,603 INFO L226 Difference]: Without dead ends: 1377 [2022-11-02 20:25:32,604 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 20:25:32,604 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 2752 mSDsluCounter, 2411 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2752 SdHoareTripleChecker+Valid, 2854 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 20:25:32,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2752 Valid, 2854 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:25:32,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2022-11-02 20:25:32,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 495. [2022-11-02 20:25:32,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.319838056680162) internal successors, (652), 494 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 20:25:32,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 652 transitions. [2022-11-02 20:25:32,618 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 652 transitions. Word has length 182 [2022-11-02 20:25:32,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:32,618 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 652 transitions. [2022-11-02 20:25:32,618 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 20:25:32,619 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 652 transitions. [2022-11-02 20:25:32,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:32,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:32,620 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 20:25:32,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:32,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:32,835 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:32,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:32,836 INFO L85 PathProgramCache]: Analyzing trace with hash -760209213, now seen corresponding path program 1 times [2022-11-02 20:25:32,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:32,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [461439673] [2022-11-02 20:25:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:32,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:32,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:32,838 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:32,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-02 20:25:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:33,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:33,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:33,848 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 20:25:33,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:33,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:33,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [461439673] [2022-11-02 20:25:33,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [461439673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:33,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:33,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:25:33,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119738137] [2022-11-02 20:25:33,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:33,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:25:33,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:33,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:25:33,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:25:33,850 INFO L87 Difference]: Start difference. First operand 495 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 20:25:34,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:34,826 INFO L93 Difference]: Finished difference Result 1670 states and 2380 transitions. [2022-11-02 20:25:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:25:34,827 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 20:25:34,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:34,829 INFO L225 Difference]: With dead ends: 1670 [2022-11-02 20:25:34,830 INFO L226 Difference]: Without dead ends: 1379 [2022-11-02 20:25:34,831 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 20:25:34,831 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 2746 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2746 SdHoareTripleChecker+Valid, 2869 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 20:25:34,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2746 Valid, 2869 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:25:34,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2022-11-02 20:25:34,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 497. [2022-11-02 20:25:34,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.3185483870967742) internal successors, (654), 496 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 20:25:34,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 654 transitions. [2022-11-02 20:25:34,847 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 654 transitions. Word has length 182 [2022-11-02 20:25:34,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:34,848 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 654 transitions. [2022-11-02 20:25:34,848 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 20:25:34,848 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 654 transitions. [2022-11-02 20:25:34,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:34,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:34,850 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 20:25:34,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2022-11-02 20:25:35,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:35,063 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:35,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:35,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1689390917, now seen corresponding path program 1 times [2022-11-02 20:25:35,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:35,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679256428] [2022-11-02 20:25:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:35,065 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:35,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:35,067 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:35,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-02 20:25:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:35,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:35,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:36,310 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 20:25:36,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:36,311 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:36,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679256428] [2022-11-02 20:25:36,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679256428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:36,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:36,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:25:36,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746860533] [2022-11-02 20:25:36,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:36,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:25:36,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:36,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:25:36,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:25:36,314 INFO L87 Difference]: Start difference. First operand 497 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 20:25:37,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:37,325 INFO L93 Difference]: Finished difference Result 1674 states and 2383 transitions. [2022-11-02 20:25:37,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:25:37,325 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 20:25:37,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:37,327 INFO L225 Difference]: With dead ends: 1674 [2022-11-02 20:25:37,327 INFO L226 Difference]: Without dead ends: 1381 [2022-11-02 20:25:37,328 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 20:25:37,328 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 2740 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2740 SdHoareTripleChecker+Valid, 2884 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 20:25:37,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2740 Valid, 2884 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:25:37,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2022-11-02 20:25:37,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 499. [2022-11-02 20:25:37,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.3172690763052208) internal successors, (656), 498 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 20:25:37,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 656 transitions. [2022-11-02 20:25:37,342 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 656 transitions. Word has length 182 [2022-11-02 20:25:37,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:37,342 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 656 transitions. [2022-11-02 20:25:37,342 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 20:25:37,343 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 656 transitions. [2022-11-02 20:25:37,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:37,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:37,344 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 20:25:37,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:37,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:37,564 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:37,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:37,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1946044857, now seen corresponding path program 1 times [2022-11-02 20:25:37,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:37,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832861973] [2022-11-02 20:25:37,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:37,566 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:37,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:37,567 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:37,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-02 20:25:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:38,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:38,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:38,636 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 20:25:38,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:38,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:38,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832861973] [2022-11-02 20:25:38,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832861973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:38,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:38,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:25:38,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563030376] [2022-11-02 20:25:38,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:38,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:25:38,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:38,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:25:38,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:25:38,638 INFO L87 Difference]: Start difference. First operand 499 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 20:25:39,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:39,599 INFO L93 Difference]: Finished difference Result 1678 states and 2386 transitions. [2022-11-02 20:25:39,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:25:39,599 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 20:25:39,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:39,601 INFO L225 Difference]: With dead ends: 1678 [2022-11-02 20:25:39,601 INFO L226 Difference]: Without dead ends: 1383 [2022-11-02 20:25:39,602 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 20:25:39,602 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 2734 mSDsluCounter, 2441 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2734 SdHoareTripleChecker+Valid, 2899 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 20:25:39,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2734 Valid, 2899 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:25:39,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2022-11-02 20:25:39,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 501. [2022-11-02 20:25:39,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.316) internal successors, (658), 500 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 20:25:39,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 658 transitions. [2022-11-02 20:25:39,624 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 658 transitions. Word has length 182 [2022-11-02 20:25:39,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:39,624 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 658 transitions. [2022-11-02 20:25:39,624 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 20:25:39,625 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 658 transitions. [2022-11-02 20:25:39,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:39,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:39,626 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 20:25:39,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:39,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:39,840 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:39,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:39,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1504916937, now seen corresponding path program 1 times [2022-11-02 20:25:39,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:39,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894533671] [2022-11-02 20:25:39,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:39,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:39,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:39,844 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:39,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-02 20:25:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:40,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:40,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:40,939 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 20:25:40,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:40,939 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:40,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894533671] [2022-11-02 20:25:40,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894533671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:40,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:40,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:25:40,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579040292] [2022-11-02 20:25:40,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:40,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:25:40,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:40,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:25:40,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:25:40,941 INFO L87 Difference]: Start difference. First operand 501 states and 658 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 20:25:42,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:42,030 INFO L93 Difference]: Finished difference Result 1818 states and 2591 transitions. [2022-11-02 20:25:42,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:25:42,030 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 20:25:42,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:42,032 INFO L225 Difference]: With dead ends: 1818 [2022-11-02 20:25:42,032 INFO L226 Difference]: Without dead ends: 1521 [2022-11-02 20:25:42,032 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 20:25:42,033 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 3024 mSDsluCounter, 3124 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3024 SdHoareTripleChecker+Valid, 3593 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 20:25:42,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3024 Valid, 3593 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:25:42,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2022-11-02 20:25:42,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 505. [2022-11-02 20:25:42,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 1.3154761904761905) internal successors, (663), 504 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:42,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 663 transitions. [2022-11-02 20:25:42,047 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 663 transitions. Word has length 182 [2022-11-02 20:25:42,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:42,048 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 663 transitions. [2022-11-02 20:25:42,048 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 20:25:42,048 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 663 transitions. [2022-11-02 20:25:42,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:42,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:42,049 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 20:25:42,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (61)] Ended with exit code 0 [2022-11-02 20:25:42,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:42,250 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:42,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:42,251 INFO L85 PathProgramCache]: Analyzing trace with hash -2088450485, now seen corresponding path program 1 times [2022-11-02 20:25:42,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:42,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982345606] [2022-11-02 20:25:42,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:42,252 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:42,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:42,253 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:42,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-02 20:25:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:42,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:42,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:43,363 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 20:25:43,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:43,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:43,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982345606] [2022-11-02 20:25:43,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [982345606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:43,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:43,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:25:43,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967263362] [2022-11-02 20:25:43,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:43,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:25:43,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:43,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:25:43,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:25:43,366 INFO L87 Difference]: Start difference. First operand 505 states and 663 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 20:25:44,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:44,558 INFO L93 Difference]: Finished difference Result 1830 states and 2605 transitions. [2022-11-02 20:25:44,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:25:44,558 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 20:25:44,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:44,561 INFO L225 Difference]: With dead ends: 1830 [2022-11-02 20:25:44,561 INFO L226 Difference]: Without dead ends: 1529 [2022-11-02 20:25:44,562 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 20:25:44,562 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 3021 mSDsluCounter, 3137 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3021 SdHoareTripleChecker+Valid, 3611 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:44,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3021 Valid, 3611 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:25:44,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2022-11-02 20:25:44,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 507. [2022-11-02 20:25:44,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 506 states have (on average 1.3142292490118577) internal successors, (665), 506 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 20:25:44,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 665 transitions. [2022-11-02 20:25:44,577 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 665 transitions. Word has length 182 [2022-11-02 20:25:44,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:44,578 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 665 transitions. [2022-11-02 20:25:44,578 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 20:25:44,578 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 665 transitions. [2022-11-02 20:25:44,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:44,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:44,580 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 20:25:44,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:44,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:44,793 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:44,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:44,794 INFO L85 PathProgramCache]: Analyzing trace with hash -702247091, now seen corresponding path program 1 times [2022-11-02 20:25:44,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:44,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317281176] [2022-11-02 20:25:44,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:44,795 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:44,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:44,796 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:44,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2022-11-02 20:25:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:45,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:45,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:45,931 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 20:25:45,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:45,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:45,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317281176] [2022-11-02 20:25:45,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1317281176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:45,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:45,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:25:45,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069960087] [2022-11-02 20:25:45,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:45,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:25:45,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:45,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:25:45,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:25:45,933 INFO L87 Difference]: Start difference. First operand 507 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 20:25:47,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:47,276 INFO L93 Difference]: Finished difference Result 1840 states and 2616 transitions. [2022-11-02 20:25:47,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:25:47,276 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 20:25:47,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:47,279 INFO L225 Difference]: With dead ends: 1840 [2022-11-02 20:25:47,279 INFO L226 Difference]: Without dead ends: 1537 [2022-11-02 20:25:47,279 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 20:25:47,280 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 3018 mSDsluCounter, 3150 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3018 SdHoareTripleChecker+Valid, 3629 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 20:25:47,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3018 Valid, 3629 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:25:47,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2022-11-02 20:25:47,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 509. [2022-11-02 20:25:47,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 508 states have (on average 1.312992125984252) internal successors, (667), 508 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 20:25:47,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 667 transitions. [2022-11-02 20:25:47,292 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 667 transitions. Word has length 182 [2022-11-02 20:25:47,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:47,292 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 667 transitions. [2022-11-02 20:25:47,292 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 20:25:47,292 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 667 transitions. [2022-11-02 20:25:47,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:47,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:47,294 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 20:25:47,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (63)] Ended with exit code 0 [2022-11-02 20:25:47,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:47,515 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:47,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:47,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1220980943, now seen corresponding path program 1 times [2022-11-02 20:25:47,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:47,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855890677] [2022-11-02 20:25:47,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:47,517 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:47,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:47,518 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:47,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-02 20:25:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:48,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:48,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:48,632 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 20:25:48,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:48,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:48,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855890677] [2022-11-02 20:25:48,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855890677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:48,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:48,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:25:48,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71115934] [2022-11-02 20:25:48,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:48,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:25:48,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:48,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:25:48,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:25:48,634 INFO L87 Difference]: Start difference. First operand 509 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 20:25:49,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:49,899 INFO L93 Difference]: Finished difference Result 1850 states and 2627 transitions. [2022-11-02 20:25:49,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:25:49,900 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 20:25:49,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:49,903 INFO L225 Difference]: With dead ends: 1850 [2022-11-02 20:25:49,903 INFO L226 Difference]: Without dead ends: 1545 [2022-11-02 20:25:49,904 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 20:25:49,904 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 3015 mSDsluCounter, 3163 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3015 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:49,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3015 Valid, 3647 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:25:49,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2022-11-02 20:25:49,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 511. [2022-11-02 20:25:49,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 510 states have (on average 1.311764705882353) internal successors, (669), 510 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 20:25:49,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 669 transitions. [2022-11-02 20:25:49,918 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 669 transitions. Word has length 182 [2022-11-02 20:25:49,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:49,918 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 669 transitions. [2022-11-02 20:25:49,918 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 20:25:49,919 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 669 transitions. [2022-11-02 20:25:49,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:49,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:49,920 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 20:25:49,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (64)] Ended with exit code 0 [2022-11-02 20:25:50,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:50,139 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:50,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:50,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1361529553, now seen corresponding path program 1 times [2022-11-02 20:25:50,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:50,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772976005] [2022-11-02 20:25:50,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:50,141 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:50,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:50,143 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:50,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-02 20:25:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:50,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:50,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:51,446 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 20:25:51,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:51,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:51,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772976005] [2022-11-02 20:25:51,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772976005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:51,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:51,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:25:51,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091663385] [2022-11-02 20:25:51,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:51,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:25:51,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:51,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:25:51,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:25:51,449 INFO L87 Difference]: Start difference. First operand 511 states and 669 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 20:25:52,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:52,505 INFO L93 Difference]: Finished difference Result 1702 states and 2407 transitions. [2022-11-02 20:25:52,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:25:52,505 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 20:25:52,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:52,508 INFO L225 Difference]: With dead ends: 1702 [2022-11-02 20:25:52,509 INFO L226 Difference]: Without dead ends: 1395 [2022-11-02 20:25:52,510 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 20:25:52,510 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 2702 mSDsluCounter, 2503 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 SdHoareTripleChecker+Valid, 2992 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 20:25:52,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2702 Valid, 2992 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:25:52,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2022-11-02 20:25:52,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 513. [2022-11-02 20:25:52,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 512 states have (on average 1.310546875) internal successors, (671), 512 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 20:25:52,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 671 transitions. [2022-11-02 20:25:52,526 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 671 transitions. Word has length 182 [2022-11-02 20:25:52,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:52,527 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 671 transitions. [2022-11-02 20:25:52,527 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 20:25:52,527 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 671 transitions. [2022-11-02 20:25:52,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:52,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:52,529 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 20:25:52,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:52,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:52,749 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:52,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:52,750 INFO L85 PathProgramCache]: Analyzing trace with hash -443908781, now seen corresponding path program 1 times [2022-11-02 20:25:52,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:52,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547876830] [2022-11-02 20:25:52,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:52,751 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:52,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:52,753 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:52,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2022-11-02 20:25:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:53,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:53,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:54,005 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 20:25:54,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:54,006 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:54,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547876830] [2022-11-02 20:25:54,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547876830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:54,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:54,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:25:54,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532726717] [2022-11-02 20:25:54,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:54,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:25:54,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:54,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:25:54,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:25:54,008 INFO L87 Difference]: Start difference. First operand 513 states and 671 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 20:25:55,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:55,399 INFO L93 Difference]: Finished difference Result 1840 states and 2609 transitions. [2022-11-02 20:25:55,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:25:55,399 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 20:25:55,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:55,401 INFO L225 Difference]: With dead ends: 1840 [2022-11-02 20:25:55,402 INFO L226 Difference]: Without dead ends: 1531 [2022-11-02 20:25:55,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:25:55,403 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 2989 mSDsluCounter, 3184 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2989 SdHoareTripleChecker+Valid, 3678 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:55,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2989 Valid, 3678 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:25:55,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2022-11-02 20:25:55,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 515. [2022-11-02 20:25:55,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 1.3093385214007782) internal successors, (673), 514 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 20:25:55,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 673 transitions. [2022-11-02 20:25:55,420 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 673 transitions. Word has length 182 [2022-11-02 20:25:55,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:55,421 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 673 transitions. [2022-11-02 20:25:55,421 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 20:25:55,421 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 673 transitions. [2022-11-02 20:25:55,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:55,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:55,423 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 20:25:55,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:55,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:55,639 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:55,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:55,640 INFO L85 PathProgramCache]: Analyzing trace with hash -21206955, now seen corresponding path program 1 times [2022-11-02 20:25:55,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:55,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262772833] [2022-11-02 20:25:55,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:55,641 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:55,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:55,642 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:55,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-02 20:25:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:56,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:56,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:56,893 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 20:25:56,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:56,893 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:56,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262772833] [2022-11-02 20:25:56,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262772833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:56,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:56,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:25:56,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414420023] [2022-11-02 20:25:56,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:56,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:25:56,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:56,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:25:56,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:25:56,896 INFO L87 Difference]: Start difference. First operand 515 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 20:25:58,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:58,283 INFO L93 Difference]: Finished difference Result 1850 states and 2620 transitions. [2022-11-02 20:25:58,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:25:58,284 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 20:25:58,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:58,287 INFO L225 Difference]: With dead ends: 1850 [2022-11-02 20:25:58,287 INFO L226 Difference]: Without dead ends: 1539 [2022-11-02 20:25:58,288 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 20:25:58,289 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 2986 mSDsluCounter, 3197 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2986 SdHoareTripleChecker+Valid, 3696 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:58,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2986 Valid, 3696 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:25:58,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2022-11-02 20:25:58,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 517. [2022-11-02 20:25:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 1.308139534883721) internal successors, (675), 516 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 20:25:58,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 675 transitions. [2022-11-02 20:25:58,307 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 675 transitions. Word has length 182 [2022-11-02 20:25:58,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:58,308 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 675 transitions. [2022-11-02 20:25:58,308 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 20:25:58,308 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 675 transitions. [2022-11-02 20:25:58,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:25:58,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:58,310 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 20:25:58,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:58,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:58,523 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:58,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:58,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1710150697, now seen corresponding path program 1 times [2022-11-02 20:25:58,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:58,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000019455] [2022-11-02 20:25:58,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:58,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:58,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:58,527 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:58,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2022-11-02 20:25:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:59,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:59,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:59,766 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 20:25:59,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:59,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:59,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000019455] [2022-11-02 20:25:59,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000019455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:59,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:59,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:25:59,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026900759] [2022-11-02 20:25:59,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:59,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:25:59,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:59,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:25:59,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:25:59,769 INFO L87 Difference]: Start difference. First operand 517 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 20:26:01,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:01,004 INFO L93 Difference]: Finished difference Result 1860 states and 2631 transitions. [2022-11-02 20:26:01,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:26:01,004 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 20:26:01,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:01,006 INFO L225 Difference]: With dead ends: 1860 [2022-11-02 20:26:01,006 INFO L226 Difference]: Without dead ends: 1547 [2022-11-02 20:26:01,007 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 20:26:01,007 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 2983 mSDsluCounter, 3210 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2983 SdHoareTripleChecker+Valid, 3714 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:01,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2983 Valid, 3714 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:26:01,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2022-11-02 20:26:01,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 519. [2022-11-02 20:26:01,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.306949806949807) internal successors, (677), 518 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 20:26:01,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 677 transitions. [2022-11-02 20:26:01,023 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 677 transitions. Word has length 182 [2022-11-02 20:26:01,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:01,024 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 677 transitions. [2022-11-02 20:26:01,024 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 20:26:01,024 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 677 transitions. [2022-11-02 20:26:01,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:26:01,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:01,025 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 20:26:01,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:01,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:01,241 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:01,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:01,242 INFO L85 PathProgramCache]: Analyzing trace with hash 996468697, now seen corresponding path program 1 times [2022-11-02 20:26:01,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:01,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617101048] [2022-11-02 20:26:01,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:01,243 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:01,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:01,244 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:01,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-02 20:26:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:01,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:26:01,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:02,366 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 20:26:02,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:26:02,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:02,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617101048] [2022-11-02 20:26:02,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617101048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:26:02,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:26:02,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:26:02,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913966057] [2022-11-02 20:26:02,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:26:02,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:26:02,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:02,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:26:02,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:26:02,368 INFO L87 Difference]: Start difference. First operand 519 states and 677 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 20:26:03,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:03,549 INFO L93 Difference]: Finished difference Result 1720 states and 2422 transitions. [2022-11-02 20:26:03,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:26:03,550 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 20:26:03,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:03,551 INFO L225 Difference]: With dead ends: 1720 [2022-11-02 20:26:03,551 INFO L226 Difference]: Without dead ends: 1405 [2022-11-02 20:26:03,552 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 20:26:03,552 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 2676 mSDsluCounter, 2555 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2676 SdHoareTripleChecker+Valid, 3070 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:03,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2676 Valid, 3070 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:26:03,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2022-11-02 20:26:03,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 523. [2022-11-02 20:26:03,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 522 states have (on average 1.3065134099616857) internal successors, (682), 522 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:03,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 682 transitions. [2022-11-02 20:26:03,562 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 682 transitions. Word has length 182 [2022-11-02 20:26:03,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:03,563 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 682 transitions. [2022-11-02 20:26:03,563 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 20:26:03,563 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 682 transitions. [2022-11-02 20:26:03,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:26:03,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:03,564 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 20:26:03,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (69)] Ended with exit code 0 [2022-11-02 20:26:03,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:03,765 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:03,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:03,765 INFO L85 PathProgramCache]: Analyzing trace with hash 409662683, now seen corresponding path program 1 times [2022-11-02 20:26:03,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:03,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162486963] [2022-11-02 20:26:03,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:03,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:03,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:03,767 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:03,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2022-11-02 20:26:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:04,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:26:04,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:05,037 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 20:26:05,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:26:05,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:05,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162486963] [2022-11-02 20:26:05,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162486963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:26:05,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:26:05,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:26:05,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070957540] [2022-11-02 20:26:05,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:26:05,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:26:05,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:05,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:26:05,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:26:05,039 INFO L87 Difference]: Start difference. First operand 523 states and 682 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 20:26:06,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:06,449 INFO L93 Difference]: Finished difference Result 1860 states and 2627 transitions. [2022-11-02 20:26:06,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:26:06,450 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 20:26:06,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:06,451 INFO L225 Difference]: With dead ends: 1860 [2022-11-02 20:26:06,451 INFO L226 Difference]: Without dead ends: 1541 [2022-11-02 20:26:06,452 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 20:26:06,452 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 2959 mSDsluCounter, 3246 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2959 SdHoareTripleChecker+Valid, 3766 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:06,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2959 Valid, 3766 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:26:06,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2022-11-02 20:26:06,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 525. [2022-11-02 20:26:06,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 524 states have (on average 1.3053435114503817) internal successors, (684), 524 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 20:26:06,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 684 transitions. [2022-11-02 20:26:06,469 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 684 transitions. Word has length 182 [2022-11-02 20:26:06,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:06,469 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 684 transitions. [2022-11-02 20:26:06,470 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 20:26:06,470 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 684 transitions. [2022-11-02 20:26:06,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:26:06,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:06,471 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 20:26:06,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:06,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:06,687 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:06,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:06,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1110727261, now seen corresponding path program 1 times [2022-11-02 20:26:06,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:06,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772897311] [2022-11-02 20:26:06,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:06,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:06,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:06,690 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:06,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-02 20:26:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:07,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:26:07,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:07,967 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 20:26:07,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:26:07,968 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:07,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772897311] [2022-11-02 20:26:07,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772897311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:26:07,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:26:07,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:26:07,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428075920] [2022-11-02 20:26:07,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:26:07,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:26:07,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:07,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:26:07,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:26:07,970 INFO L87 Difference]: Start difference. First operand 525 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 20:26:09,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:09,399 INFO L93 Difference]: Finished difference Result 1870 states and 2638 transitions. [2022-11-02 20:26:09,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:26:09,399 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 20:26:09,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:09,401 INFO L225 Difference]: With dead ends: 1870 [2022-11-02 20:26:09,401 INFO L226 Difference]: Without dead ends: 1549 [2022-11-02 20:26:09,402 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 20:26:09,403 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 2956 mSDsluCounter, 3259 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2956 SdHoareTripleChecker+Valid, 3784 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:09,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2956 Valid, 3784 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:26:09,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2022-11-02 20:26:09,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 527. [2022-11-02 20:26:09,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 1.3041825095057034) internal successors, (686), 526 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 20:26:09,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 686 transitions. [2022-11-02 20:26:09,417 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 686 transitions. Word has length 182 [2022-11-02 20:26:09,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:09,418 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 686 transitions. [2022-11-02 20:26:09,418 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 20:26:09,418 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 686 transitions. [2022-11-02 20:26:09,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:26:09,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:09,420 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 20:26:09,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:09,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:09,641 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:09,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:09,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1790785631, now seen corresponding path program 1 times [2022-11-02 20:26:09,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:09,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093256533] [2022-11-02 20:26:09,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:09,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:09,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:09,644 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:09,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2022-11-02 20:26:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:10,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:26:10,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:10,944 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 20:26:10,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:26:10,944 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:10,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093256533] [2022-11-02 20:26:10,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093256533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:26:10,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:26:10,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:26:10,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916428070] [2022-11-02 20:26:10,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:26:10,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:26:10,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:10,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:26:10,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:26:10,946 INFO L87 Difference]: Start difference. First operand 527 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 20:26:12,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:12,398 INFO L93 Difference]: Finished difference Result 1880 states and 2649 transitions. [2022-11-02 20:26:12,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:26:12,403 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 20:26:12,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:12,405 INFO L225 Difference]: With dead ends: 1880 [2022-11-02 20:26:12,405 INFO L226 Difference]: Without dead ends: 1557 [2022-11-02 20:26:12,406 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 20:26:12,406 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 2953 mSDsluCounter, 3272 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2953 SdHoareTripleChecker+Valid, 3802 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:12,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2953 Valid, 3802 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:26:12,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2022-11-02 20:26:12,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 529. [2022-11-02 20:26:12,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 528 states have (on average 1.303030303030303) internal successors, (688), 528 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 20:26:12,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 688 transitions. [2022-11-02 20:26:12,424 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 688 transitions. Word has length 182 [2022-11-02 20:26:12,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:12,425 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 688 transitions. [2022-11-02 20:26:12,425 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 20:26:12,425 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 688 transitions. [2022-11-02 20:26:12,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:26:12,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:12,427 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 20:26:12,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:12,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:12,648 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:12,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:12,649 INFO L85 PathProgramCache]: Analyzing trace with hash -729174303, now seen corresponding path program 1 times [2022-11-02 20:26:12,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:12,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332859065] [2022-11-02 20:26:12,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:12,650 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:12,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:12,652 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:12,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2022-11-02 20:26:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:13,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:26:13,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:14,063 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 20:26:14,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:26:14,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:14,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332859065] [2022-11-02 20:26:14,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332859065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:26:14,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:26:14,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:26:14,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369321615] [2022-11-02 20:26:14,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:26:14,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:26:14,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:14,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:26:14,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:26:14,066 INFO L87 Difference]: Start difference. First operand 529 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 20:26:15,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:15,525 INFO L93 Difference]: Finished difference Result 1890 states and 2660 transitions. [2022-11-02 20:26:15,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:26:15,525 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 20:26:15,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:15,527 INFO L225 Difference]: With dead ends: 1890 [2022-11-02 20:26:15,527 INFO L226 Difference]: Without dead ends: 1565 [2022-11-02 20:26:15,528 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 20:26:15,529 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 2950 mSDsluCounter, 3285 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2950 SdHoareTripleChecker+Valid, 3820 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:15,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2950 Valid, 3820 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:26:15,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2022-11-02 20:26:15,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 531. [2022-11-02 20:26:15,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 1.3018867924528301) internal successors, (690), 530 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 20:26:15,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 690 transitions. [2022-11-02 20:26:15,546 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 690 transitions. Word has length 182 [2022-11-02 20:26:15,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:15,546 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 690 transitions. [2022-11-02 20:26:15,547 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 20:26:15,547 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 690 transitions. [2022-11-02 20:26:15,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:26:15,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:15,548 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 20:26:15,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (73)] Ended with exit code 0 [2022-11-02 20:26:15,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:15,748 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:15,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:15,749 INFO L85 PathProgramCache]: Analyzing trace with hash -727327261, now seen corresponding path program 1 times [2022-11-02 20:26:15,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:15,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565933865] [2022-11-02 20:26:15,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:15,751 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:15,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:15,752 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:15,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2022-11-02 20:26:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:16,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-02 20:26:16,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:17,839 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 20:26:17,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:21,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:26:21,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:21,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565933865] [2022-11-02 20:26:21,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565933865] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:21,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:21,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-02 20:26:21,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34755359] [2022-11-02 20:26:21,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:21,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:26:21,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:21,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:26:21,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:26:21,160 INFO L87 Difference]: Start difference. First operand 531 states and 690 transitions. Second operand has 20 states, 20 states have (on average 18.1) internal successors, (362), 20 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 20:26:23,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:23,218 INFO L93 Difference]: Finished difference Result 1610 states and 2217 transitions. [2022-11-02 20:26:23,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:26:23,219 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 18.1) internal successors, (362), 20 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 20:26:23,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:23,220 INFO L225 Difference]: With dead ends: 1610 [2022-11-02 20:26:23,221 INFO L226 Difference]: Without dead ends: 1608 [2022-11-02 20:26:23,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=227, Invalid=1413, Unknown=0, NotChecked=0, Total=1640 [2022-11-02 20:26:23,221 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 769 mSDsluCounter, 5336 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 5729 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 827 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:23,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 5729 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 827 Unchecked, 0.2s Time] [2022-11-02 20:26:23,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2022-11-02 20:26:23,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 856. [2022-11-02 20:26:23,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 1.3497076023391812) internal successors, (1154), 855 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:23,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1154 transitions. [2022-11-02 20:26:23,237 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1154 transitions. Word has length 182 [2022-11-02 20:26:23,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:23,238 INFO L495 AbstractCegarLoop]: Abstraction has 856 states and 1154 transitions. [2022-11-02 20:26:23,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.1) internal successors, (362), 20 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 20:26:23,238 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1154 transitions. [2022-11-02 20:26:23,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:26:23,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:23,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:26:23,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (74)] Ended with exit code 0 [2022-11-02 20:26:23,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:23,441 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:23,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:23,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1383698237, now seen corresponding path program 1 times [2022-11-02 20:26:23,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:23,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508198607] [2022-11-02 20:26:23,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:23,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:23,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:23,445 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:23,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2022-11-02 20:26:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:24,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 2173 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:26:24,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:25,498 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 20:26:25,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:26,155 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 20:26:26,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:26,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508198607] [2022-11-02 20:26:26,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508198607] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:26,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:26,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-02 20:26:26,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308096093] [2022-11-02 20:26:26,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:26,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:26:26,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:26,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:26:26,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:26:26,159 INFO L87 Difference]: Start difference. First operand 856 states and 1154 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 20:26:26,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:26,374 INFO L93 Difference]: Finished difference Result 1614 states and 2221 transitions. [2022-11-02 20:26:26,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:26:26,375 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 20:26:26,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:26,376 INFO L225 Difference]: With dead ends: 1614 [2022-11-02 20:26:26,377 INFO L226 Difference]: Without dead ends: 962 [2022-11-02 20:26:26,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 705 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:26:26,378 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 97 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 2013 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:26,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 2013 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 61 Unchecked, 0.1s Time] [2022-11-02 20:26:26,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2022-11-02 20:26:26,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 953. [2022-11-02 20:26:26,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 952 states have (on average 1.3424369747899159) internal successors, (1278), 952 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:26,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1278 transitions. [2022-11-02 20:26:26,410 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1278 transitions. Word has length 359 [2022-11-02 20:26:26,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:26,411 INFO L495 AbstractCegarLoop]: Abstraction has 953 states and 1278 transitions. [2022-11-02 20:26:26,411 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 20:26:26,411 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1278 transitions. [2022-11-02 20:26:26,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:26:26,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:26,415 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 20:26:26,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:26,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:26,635 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:26,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:26,636 INFO L85 PathProgramCache]: Analyzing trace with hash 215450821, now seen corresponding path program 1 times [2022-11-02 20:26:26,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:26,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218707984] [2022-11-02 20:26:26,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:26,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:26,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:26,639 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:26,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2022-11-02 20:26:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:27,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 2173 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:26:27,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:28,127 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 173 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:26:28,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:28,592 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 180 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:26:28,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:28,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218707984] [2022-11-02 20:26:28,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1218707984] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:28,593 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:28,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:26:28,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011309850] [2022-11-02 20:26:28,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:28,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:26:28,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:28,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:26:28,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:26:28,595 INFO L87 Difference]: Start difference. First operand 953 states and 1278 transitions. Second operand has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:29,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:29,577 INFO L93 Difference]: Finished difference Result 3675 states and 5166 transitions. [2022-11-02 20:26:29,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:26:29,577 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 0 states have call successors, (0), 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 20:26:29,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:29,580 INFO L225 Difference]: With dead ends: 3675 [2022-11-02 20:26:29,580 INFO L226 Difference]: Without dead ends: 3023 [2022-11-02 20:26:29,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 707 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:26:29,582 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 2296 mSDsluCounter, 3090 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2296 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:29,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2296 Valid, 3410 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:26:29,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2022-11-02 20:26:29,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 1603. [2022-11-02 20:26:29,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 1.3764044943820224) internal successors, (2205), 1602 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:29,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 2205 transitions. [2022-11-02 20:26:29,628 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 2205 transitions. Word has length 359 [2022-11-02 20:26:29,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:29,629 INFO L495 AbstractCegarLoop]: Abstraction has 1603 states and 2205 transitions. [2022-11-02 20:26:29,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:29,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 2205 transitions. [2022-11-02 20:26:29,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:26:29,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:29,634 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 20:26:29,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:29,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:29,834 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:29,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:29,835 INFO L85 PathProgramCache]: Analyzing trace with hash 742844871, now seen corresponding path program 1 times [2022-11-02 20:26:29,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:29,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906472692] [2022-11-02 20:26:29,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:29,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:29,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:29,838 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:29,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2022-11-02 20:26:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:30,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 2173 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:26:30,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:31,867 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 169 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:26:31,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:32,466 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 169 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:26:32,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:32,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906472692] [2022-11-02 20:26:32,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906472692] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:32,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:32,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-02 20:26:32,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937293610] [2022-11-02 20:26:32,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:32,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:26:32,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:32,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:26:32,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:26:32,470 INFO L87 Difference]: Start difference. First operand 1603 states and 2205 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 20:26:32,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:32,663 INFO L93 Difference]: Finished difference Result 2263 states and 3146 transitions. [2022-11-02 20:26:32,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:26:32,663 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 20:26:32,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:32,666 INFO L225 Difference]: With dead ends: 2263 [2022-11-02 20:26:32,666 INFO L226 Difference]: Without dead ends: 1611 [2022-11-02 20:26:32,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:26:32,668 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 81 mSDsluCounter, 2284 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:32,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 2542 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 44 Unchecked, 0.0s Time] [2022-11-02 20:26:32,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2022-11-02 20:26:32,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1611. [2022-11-02 20:26:32,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1611 states, 1610 states have (on average 1.375776397515528) internal successors, (2215), 1610 states have internal predecessors, (2215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:32,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 2215 transitions. [2022-11-02 20:26:32,736 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 2215 transitions. Word has length 359 [2022-11-02 20:26:32,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:32,737 INFO L495 AbstractCegarLoop]: Abstraction has 1611 states and 2215 transitions. [2022-11-02 20:26:32,737 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 20:26:32,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 2215 transitions. [2022-11-02 20:26:32,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:26:32,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:32,741 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 20:26:32,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:32,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:32,965 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:32,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:32,966 INFO L85 PathProgramCache]: Analyzing trace with hash 832905161, now seen corresponding path program 1 times [2022-11-02 20:26:32,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:32,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833204129] [2022-11-02 20:26:32,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:32,968 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:32,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:32,970 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:32,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2022-11-02 20:26:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:33,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 2173 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:26:33,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:34,907 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 165 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:26:34,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 165 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:26:36,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:36,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833204129] [2022-11-02 20:26:36,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833204129] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:36,249 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:36,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-02 20:26:36,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443146884] [2022-11-02 20:26:36,249 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:36,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:26:36,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:36,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:26:36,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:26:36,252 INFO L87 Difference]: Start difference. First operand 1611 states and 2215 transitions. Second operand has 8 states, 8 states have (on average 66.375) internal successors, (531), 8 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:36,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:36,558 INFO L93 Difference]: Finished difference Result 5513 states and 7774 transitions. [2022-11-02 20:26:36,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:26:36,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 66.375) internal successors, (531), 8 states have internal predecessors, (531), 0 states have call successors, (0), 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 20:26:36,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:36,563 INFO L225 Difference]: With dead ends: 5513 [2022-11-02 20:26:36,563 INFO L226 Difference]: Without dead ends: 4211 [2022-11-02 20:26:36,565 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 20:26:36,566 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1272 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:36,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 1099 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:26:36,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4211 states. [2022-11-02 20:26:36,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4211 to 1619. [2022-11-02 20:26:36,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1619 states, 1618 states have (on average 1.3739184177997528) internal successors, (2223), 1618 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:36,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 2223 transitions. [2022-11-02 20:26:36,633 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 2223 transitions. Word has length 359 [2022-11-02 20:26:36,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:36,633 INFO L495 AbstractCegarLoop]: Abstraction has 1619 states and 2223 transitions. [2022-11-02 20:26:36,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 66.375) internal successors, (531), 8 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:36,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 2223 transitions. [2022-11-02 20:26:36,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:26:36,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:36,638 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 20:26:36,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:36,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:36,863 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:36,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:36,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1090345269, now seen corresponding path program 1 times [2022-11-02 20:26:36,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:36,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289291313] [2022-11-02 20:26:36,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:36,866 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:36,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:36,867 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:36,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2022-11-02 20:26:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:37,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 2173 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:26:37,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:38,638 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 163 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:26:38,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 163 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:26:39,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:39,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289291313] [2022-11-02 20:26:39,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [289291313] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:39,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:39,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-02 20:26:39,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787626555] [2022-11-02 20:26:39,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:39,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:26:39,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:39,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:26:39,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:26:39,973 INFO L87 Difference]: Start difference. First operand 1619 states and 2223 transitions. Second operand has 8 states, 8 states have (on average 66.375) internal successors, (531), 8 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:40,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:40,245 INFO L93 Difference]: Finished difference Result 5529 states and 7786 transitions. [2022-11-02 20:26:40,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:26:40,246 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 66.375) internal successors, (531), 8 states have internal predecessors, (531), 0 states have call successors, (0), 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 20:26:40,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:40,249 INFO L225 Difference]: With dead ends: 5529 [2022-11-02 20:26:40,249 INFO L226 Difference]: Without dead ends: 4219 [2022-11-02 20:26:40,250 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 20:26:40,251 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1792 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 1085 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 20:26:40,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1792 Valid, 1085 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:26:40,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4219 states. [2022-11-02 20:26:40,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4219 to 1627. [2022-11-02 20:26:40,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1626 states have (on average 1.3720787207872078) internal successors, (2231), 1626 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:40,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 2231 transitions. [2022-11-02 20:26:40,318 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 2231 transitions. Word has length 359 [2022-11-02 20:26:40,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:40,318 INFO L495 AbstractCegarLoop]: Abstraction has 1627 states and 2231 transitions. [2022-11-02 20:26:40,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 66.375) internal successors, (531), 8 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:40,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 2231 transitions. [2022-11-02 20:26:40,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:26:40,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:40,323 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 20:26:40,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (79)] Ended with exit code 0 [2022-11-02 20:26:40,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:40,544 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:40,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash -591788467, now seen corresponding path program 1 times [2022-11-02 20:26:40,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:40,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357191017] [2022-11-02 20:26:40,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:40,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:40,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:40,547 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:40,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2022-11-02 20:26:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:41,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 2173 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:26:41,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:42,293 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 159 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:26:42,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:43,522 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 159 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:26:43,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:43,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357191017] [2022-11-02 20:26:43,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357191017] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:43,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:43,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-02 20:26:43,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563063867] [2022-11-02 20:26:43,523 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:43,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:26:43,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:43,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:26:43,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:26:43,525 INFO L87 Difference]: Start difference. First operand 1627 states and 2231 transitions. Second operand has 8 states, 8 states have (on average 66.375) internal successors, (531), 8 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:43,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:43,802 INFO L93 Difference]: Finished difference Result 5553 states and 7810 transitions. [2022-11-02 20:26:43,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:26:43,802 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 66.375) internal successors, (531), 8 states have internal predecessors, (531), 0 states have call successors, (0), 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 20:26:43,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:43,805 INFO L225 Difference]: With dead ends: 5553 [2022-11-02 20:26:43,805 INFO L226 Difference]: Without dead ends: 4235 [2022-11-02 20:26:43,807 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 20:26:43,807 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1434 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:43,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1434 Valid, 1110 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:26:43,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4235 states. [2022-11-02 20:26:43,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4235 to 1643. [2022-11-02 20:26:43,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1643 states, 1642 states have (on average 1.3708891595615103) internal successors, (2251), 1642 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:43,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 2251 transitions. [2022-11-02 20:26:43,884 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 2251 transitions. Word has length 359 [2022-11-02 20:26:43,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:43,885 INFO L495 AbstractCegarLoop]: Abstraction has 1643 states and 2251 transitions. [2022-11-02 20:26:43,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 66.375) internal successors, (531), 8 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:43,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 2251 transitions. [2022-11-02 20:26:43,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:26:43,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:43,889 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 20:26:43,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:44,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:44,091 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:44,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:44,092 INFO L85 PathProgramCache]: Analyzing trace with hash 75593423, now seen corresponding path program 1 times [2022-11-02 20:26:44,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:44,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163879802] [2022-11-02 20:26:44,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:44,095 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:44,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:44,096 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:44,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2022-11-02 20:26:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:45,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 2173 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:26:45,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:45,900 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 157 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:26:45,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 157 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:26:47,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:47,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163879802] [2022-11-02 20:26:47,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163879802] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:47,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:47,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-02 20:26:47,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954177022] [2022-11-02 20:26:47,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:47,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:26:47,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:47,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:26:47,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:26:47,152 INFO L87 Difference]: Start difference. First operand 1643 states and 2251 transitions. Second operand has 8 states, 8 states have (on average 66.375) internal successors, (531), 8 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:47,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:47,472 INFO L93 Difference]: Finished difference Result 5577 states and 7834 transitions. [2022-11-02 20:26:47,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:26:47,472 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 66.375) internal successors, (531), 8 states have internal predecessors, (531), 0 states have call successors, (0), 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 20:26:47,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:47,475 INFO L225 Difference]: With dead ends: 5577 [2022-11-02 20:26:47,475 INFO L226 Difference]: Without dead ends: 4243 [2022-11-02 20:26:47,476 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 20:26:47,476 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1258 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:47,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1258 Valid, 1114 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:26:47,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4243 states. [2022-11-02 20:26:47,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4243 to 1651. [2022-11-02 20:26:47,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 1.3690909090909091) internal successors, (2259), 1650 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:47,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2259 transitions. [2022-11-02 20:26:47,526 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2259 transitions. Word has length 359 [2022-11-02 20:26:47,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:47,527 INFO L495 AbstractCegarLoop]: Abstraction has 1651 states and 2259 transitions. [2022-11-02 20:26:47,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 66.375) internal successors, (531), 8 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:47,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2259 transitions. [2022-11-02 20:26:47,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:26:47,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:47,530 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 20:26:47,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:47,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:47,730 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:47,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:47,731 INFO L85 PathProgramCache]: Analyzing trace with hash 420421585, now seen corresponding path program 1 times [2022-11-02 20:26:47,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:47,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832460489] [2022-11-02 20:26:47,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:47,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:47,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:47,734 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:47,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2022-11-02 20:26:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:48,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 2173 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:26:48,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:49,501 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 155 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:26:49,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:50,800 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 155 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:26:50,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:50,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832460489] [2022-11-02 20:26:50,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832460489] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:50,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:50,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-02 20:26:50,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674833490] [2022-11-02 20:26:50,802 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:50,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:26:50,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:50,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:26:50,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:26:50,805 INFO L87 Difference]: Start difference. First operand 1651 states and 2259 transitions. Second operand has 8 states, 8 states have (on average 66.375) internal successors, (531), 8 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:51,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:51,196 INFO L93 Difference]: Finished difference Result 5593 states and 7846 transitions. [2022-11-02 20:26:51,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:26:51,197 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 66.375) internal successors, (531), 8 states have internal predecessors, (531), 0 states have call successors, (0), 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 20:26:51,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:51,201 INFO L225 Difference]: With dead ends: 5593 [2022-11-02 20:26:51,202 INFO L226 Difference]: Without dead ends: 4251 [2022-11-02 20:26:51,204 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 20:26:51,205 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1254 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:51,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1254 Valid, 1113 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:26:51,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4251 states. [2022-11-02 20:26:51,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4251 to 1659. [2022-11-02 20:26:51,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1659 states, 1658 states have (on average 1.3673100120627262) internal successors, (2267), 1658 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:51,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2267 transitions. [2022-11-02 20:26:51,277 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2267 transitions. Word has length 359 [2022-11-02 20:26:51,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:51,278 INFO L495 AbstractCegarLoop]: Abstraction has 1659 states and 2267 transitions. [2022-11-02 20:26:51,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 66.375) internal successors, (531), 8 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:51,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2267 transitions. [2022-11-02 20:26:51,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:26:51,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:51,282 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 20:26:51,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:51,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:51,507 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:51,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:51,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1349050029, now seen corresponding path program 1 times [2022-11-02 20:26:51,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:51,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68639996] [2022-11-02 20:26:51,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:51,510 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:51,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:51,511 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:51,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2022-11-02 20:26:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:52,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 2173 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:26:52,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 153 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:26:53,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:54,511 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 153 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:26:54,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:54,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68639996] [2022-11-02 20:26:54,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68639996] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:54,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:54,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-02 20:26:54,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940621695] [2022-11-02 20:26:54,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:54,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:26:54,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:54,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:26:54,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:26:54,516 INFO L87 Difference]: Start difference. First operand 1659 states and 2267 transitions. Second operand has 8 states, 8 states have (on average 66.375) internal successors, (531), 8 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:54,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:54,870 INFO L93 Difference]: Finished difference Result 5888 states and 8184 transitions. [2022-11-02 20:26:54,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:26:54,872 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 66.375) internal successors, (531), 8 states have internal predecessors, (531), 0 states have call successors, (0), 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 20:26:54,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:54,874 INFO L225 Difference]: With dead ends: 5888 [2022-11-02 20:26:54,874 INFO L226 Difference]: Without dead ends: 4538 [2022-11-02 20:26:54,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 710 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:26:54,876 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 1007 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:54,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 1499 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:26:54,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4538 states. [2022-11-02 20:26:54,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4538 to 1667. [2022-11-02 20:26:54,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 1.365546218487395) internal successors, (2275), 1666 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:54,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2275 transitions. [2022-11-02 20:26:54,959 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2275 transitions. Word has length 359 [2022-11-02 20:26:54,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:54,959 INFO L495 AbstractCegarLoop]: Abstraction has 1667 states and 2275 transitions. [2022-11-02 20:26:54,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 66.375) internal successors, (531), 8 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:54,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2275 transitions. [2022-11-02 20:26:54,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:26:54,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:54,964 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 20:26:55,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:55,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:55,179 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:55,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:55,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1540725589, now seen corresponding path program 1 times [2022-11-02 20:26:55,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:55,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027903940] [2022-11-02 20:26:55,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:55,182 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:55,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:55,183 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:55,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2022-11-02 20:26:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:56,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 2173 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:26:56,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:57,112 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 151 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:26:57,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 151 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:26:58,320 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:58,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027903940] [2022-11-02 20:26:58,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027903940] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:58,320 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:58,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-02 20:26:58,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913258305] [2022-11-02 20:26:58,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:58,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:26:58,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:58,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:26:58,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:26:58,323 INFO L87 Difference]: Start difference. First operand 1667 states and 2275 transitions. Second operand has 11 states, 11 states have (on average 51.45454545454545) internal successors, (566), 11 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:58,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:58,816 INFO L93 Difference]: Finished difference Result 5833 states and 8139 transitions. [2022-11-02 20:26:58,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:26:58,817 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 51.45454545454545) internal successors, (566), 11 states have internal predecessors, (566), 0 states have call successors, (0), 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 20:26:58,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:58,822 INFO L225 Difference]: With dead ends: 5833 [2022-11-02 20:26:58,822 INFO L226 Difference]: Without dead ends: 4475 [2022-11-02 20:26:58,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 707 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:26:58,824 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 2397 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2397 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:58,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2397 Valid, 1421 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:26:58,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2022-11-02 20:26:58,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 1805. [2022-11-02 20:26:58,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 1804 states have (on average 1.3597560975609757) internal successors, (2453), 1804 states have internal predecessors, (2453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 2453 transitions. [2022-11-02 20:26:58,927 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 2453 transitions. Word has length 359 [2022-11-02 20:26:58,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:58,928 INFO L495 AbstractCegarLoop]: Abstraction has 1805 states and 2453 transitions. [2022-11-02 20:26:58,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 51.45454545454545) internal successors, (566), 11 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:58,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 2453 transitions. [2022-11-02 20:26:58,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:26:58,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:58,935 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 20:26:58,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:59,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:59,149 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:59,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:59,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1307660841, now seen corresponding path program 1 times [2022-11-02 20:26:59,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:59,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827610487] [2022-11-02 20:26:59,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:59,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:59,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:59,153 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:59,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2022-11-02 20:27:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:00,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 2173 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:27:00,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:27:01,090 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 20:27:01,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:27:02,313 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 20:27:02,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:27:02,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827610487] [2022-11-02 20:27:02,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827610487] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:27:02,314 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:27:02,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-02 20:27:02,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103045062] [2022-11-02 20:27:02,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:27:02,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:27:02,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:27:02,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:27:02,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:27:02,317 INFO L87 Difference]: Start difference. First operand 1805 states and 2453 transitions. Second operand has 12 states, 12 states have (on average 47.166666666666664) internal successors, (566), 12 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:03,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:27:03,061 INFO L93 Difference]: Finished difference Result 6279 states and 8716 transitions. [2022-11-02 20:27:03,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:27:03,062 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 47.166666666666664) internal successors, (566), 12 states have internal predecessors, (566), 0 states have call successors, (0), 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 20:27:03,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:27:03,065 INFO L225 Difference]: With dead ends: 6279 [2022-11-02 20:27:03,065 INFO L226 Difference]: Without dead ends: 4785 [2022-11-02 20:27:03,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 706 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:27:03,068 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 3232 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3232 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:27:03,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3232 Valid, 1437 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:27:03,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4785 states. [2022-11-02 20:27:03,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4785 to 1813. [2022-11-02 20:27:03,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 1.3581677704194262) internal successors, (2461), 1812 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:03,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2461 transitions. [2022-11-02 20:27:03,115 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2461 transitions. Word has length 359 [2022-11-02 20:27:03,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:03,116 INFO L495 AbstractCegarLoop]: Abstraction has 1813 states and 2461 transitions. [2022-11-02 20:27:03,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 47.166666666666664) internal successors, (566), 12 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:03,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2461 transitions. [2022-11-02 20:27:03,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:27:03,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:03,119 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 20:27:03,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (85)] Ended with exit code 0 [2022-11-02 20:27:03,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:27:03,319 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:27:03,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:03,320 INFO L85 PathProgramCache]: Analyzing trace with hash -921798439, now seen corresponding path program 1 times [2022-11-02 20:27:03,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:27:03,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025711705] [2022-11-02 20:27:03,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:03,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:27:03,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:27:03,324 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:27:03,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2022-11-02 20:27:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:04,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 2173 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:27:04,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:27:06,695 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 145 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:27:06,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:27:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 145 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:27:11,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:27:11,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025711705] [2022-11-02 20:27:11,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025711705] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:27:11,169 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:27:11,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-02 20:27:11,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978785394] [2022-11-02 20:27:11,170 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:27:11,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:27:11,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:27:11,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:27:11,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:27:11,172 INFO L87 Difference]: Start difference. First operand 1813 states and 2461 transitions. Second operand has 12 states, 12 states have (on average 47.166666666666664) internal successors, (566), 12 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:12,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:27:12,275 INFO L93 Difference]: Finished difference Result 6303 states and 8740 transitions. [2022-11-02 20:27:12,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:27:12,276 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 47.166666666666664) internal successors, (566), 12 states have internal predecessors, (566), 0 states have call successors, (0), 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 20:27:12,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:27:12,279 INFO L225 Difference]: With dead ends: 6303 [2022-11-02 20:27:12,280 INFO L226 Difference]: Without dead ends: 4801 [2022-11-02 20:27:12,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 706 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:27:12,282 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 2733 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2733 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:27:12,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2733 Valid, 1324 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:27:12,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2022-11-02 20:27:12,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 1829. [2022-11-02 20:27:12,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1828 states have (on average 1.3572210065645514) internal successors, (2481), 1828 states have internal predecessors, (2481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:12,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2481 transitions. [2022-11-02 20:27:12,363 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2481 transitions. Word has length 359 [2022-11-02 20:27:12,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:12,363 INFO L495 AbstractCegarLoop]: Abstraction has 1829 states and 2481 transitions. [2022-11-02 20:27:12,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 47.166666666666664) internal successors, (566), 12 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:12,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2481 transitions. [2022-11-02 20:27:12,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:27:12,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:12,367 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 20:27:12,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2022-11-02 20:27:12,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:27:12,568 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:27:12,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:12,569 INFO L85 PathProgramCache]: Analyzing trace with hash 975181019, now seen corresponding path program 1 times [2022-11-02 20:27:12,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:27:12,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989905048] [2022-11-02 20:27:12,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:12,571 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:27:12,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:27:12,572 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:27:12,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2022-11-02 20:27:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:13,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 2173 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:27:13,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:27:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 141 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:27:15,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:27:20,053 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 141 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:27:20,054 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:27:20,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989905048] [2022-11-02 20:27:20,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989905048] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:27:20,054 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:27:20,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-02 20:27:20,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991595302] [2022-11-02 20:27:20,055 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:27:20,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:27:20,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:27:20,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:27:20,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:27:20,057 INFO L87 Difference]: Start difference. First operand 1829 states and 2481 transitions. Second operand has 12 states, 12 states have (on average 45.833333333333336) internal successors, (550), 12 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:21,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:27:21,298 INFO L93 Difference]: Finished difference Result 6364 states and 8778 transitions. [2022-11-02 20:27:21,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:27:21,300 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 45.833333333333336) internal successors, (550), 12 states have internal predecessors, (550), 0 states have call successors, (0), 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 20:27:21,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:27:21,304 INFO L225 Difference]: With dead ends: 6364 [2022-11-02 20:27:21,304 INFO L226 Difference]: Without dead ends: 4846 [2022-11-02 20:27:21,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 706 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:27:21,307 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 2132 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2132 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:27:21,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2132 Valid, 2199 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:27:21,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4846 states. [2022-11-02 20:27:21,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4846 to 1845. [2022-11-02 20:27:21,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1845 states, 1844 states have (on average 1.3562906724511932) internal successors, (2501), 1844 states have internal predecessors, (2501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:21,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1845 states to 1845 states and 2501 transitions. [2022-11-02 20:27:21,359 INFO L78 Accepts]: Start accepts. Automaton has 1845 states and 2501 transitions. Word has length 359 [2022-11-02 20:27:21,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:21,360 INFO L495 AbstractCegarLoop]: Abstraction has 1845 states and 2501 transitions. [2022-11-02 20:27:21,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.833333333333336) internal successors, (550), 12 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:21,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1845 states and 2501 transitions. [2022-11-02 20:27:21,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-02 20:27:21,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:21,363 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 20:27:21,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2022-11-02 20:27:21,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:27:21,564 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:27:21,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:21,564 INFO L85 PathProgramCache]: Analyzing trace with hash 819200477, now seen corresponding path program 1 times [2022-11-02 20:27:21,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:27:21,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017565938] [2022-11-02 20:27:21,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:21,566 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:27:21,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:27:21,567 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:27:21,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2022-11-02 20:27:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:22,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 2173 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:27:22,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:27:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 139 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:27:23,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:27:24,043 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 139 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:27:24,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:27:24,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017565938] [2022-11-02 20:27:24,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017565938] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:27:24,043 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:27:24,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-02 20:27:24,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394344549] [2022-11-02 20:27:24,044 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:27:24,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:27:24,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:27:24,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:27:24,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:27:24,046 INFO L87 Difference]: Start difference. First operand 1845 states and 2501 transitions. Second operand has 14 states, 14 states have (on average 39.285714285714285) internal successors, (550), 14 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:24,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:27:24,285 INFO L93 Difference]: Finished difference Result 2699 states and 3686 transitions. [2022-11-02 20:27:24,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:27:24,286 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 39.285714285714285) internal successors, (550), 14 states have internal predecessors, (550), 0 states have call successors, (0), 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 20:27:24,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:27:24,287 INFO L225 Difference]: With dead ends: 2699 [2022-11-02 20:27:24,287 INFO L226 Difference]: Without dead ends: 1931 [2022-11-02 20:27:24,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:27:24,288 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 101 mSDsluCounter, 2290 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:27:24,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 2548 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 57 Unchecked, 0.1s Time] [2022-11-02 20:27:24,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2022-11-02 20:27:24,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 1931. [2022-11-02 20:27:24,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1930 states have (on average 1.3538860103626944) internal successors, (2613), 1930 states have internal predecessors, (2613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:24,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 2613 transitions. [2022-11-02 20:27:24,332 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 2613 transitions. Word has length 359 [2022-11-02 20:27:24,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:24,333 INFO L495 AbstractCegarLoop]: Abstraction has 1931 states and 2613 transitions. [2022-11-02 20:27:24,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 39.285714285714285) internal successors, (550), 14 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:24,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 2613 transitions. [2022-11-02 20:27:24,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2022-11-02 20:27:24,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:24,340 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:24,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (88)] Ended with exit code 0 [2022-11-02 20:27:24,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:27:24,541 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:27:24,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:24,541 INFO L85 PathProgramCache]: Analyzing trace with hash 505626843, now seen corresponding path program 1 times [2022-11-02 20:27:24,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:27:24,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847580162] [2022-11-02 20:27:24,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:24,544 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:27:24,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:27:24,545 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:27:24,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2022-11-02 20:27:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:25,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 3202 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:27:25,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:27:26,183 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 358 proven. 3 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-02 20:27:26,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:27:26,217 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 361 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-02 20:27:26,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:27:26,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847580162] [2022-11-02 20:27:26,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847580162] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:27:26,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:27:26,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-11-02 20:27:26,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097329819] [2022-11-02 20:27:26,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:27:26,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:27:26,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:27:26,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:27:26,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:27:26,220 INFO L87 Difference]: Start difference. First operand 1931 states and 2613 transitions. Second operand has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 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 20:27:26,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:27:26,347 INFO L93 Difference]: Finished difference Result 6872 states and 9437 transitions. [2022-11-02 20:27:26,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:27:26,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 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) Word has length 536 [2022-11-02 20:27:26,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:27:26,352 INFO L225 Difference]: With dead ends: 6872 [2022-11-02 20:27:26,352 INFO L226 Difference]: Without dead ends: 5338 [2022-11-02 20:27:26,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1074 GetRequests, 1067 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 20:27:26,355 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 1276 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1276 SdHoareTripleChecker+Valid, 1044 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 20:27:26,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1276 Valid, 1044 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:27:26,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2022-11-02 20:27:26,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 1939. [2022-11-02 20:27:26,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1939 states, 1938 states have (on average 1.3524251805985552) internal successors, (2621), 1938 states have internal predecessors, (2621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:26,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 2621 transitions. [2022-11-02 20:27:26,407 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 2621 transitions. Word has length 536 [2022-11-02 20:27:26,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:26,407 INFO L495 AbstractCegarLoop]: Abstraction has 1939 states and 2621 transitions. [2022-11-02 20:27:26,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 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 20:27:26,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 2621 transitions. [2022-11-02 20:27:26,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2022-11-02 20:27:26,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:26,412 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:26,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2022-11-02 20:27:26,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:27:26,613 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:27:26,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:26,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1457437979, now seen corresponding path program 1 times [2022-11-02 20:27:26,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:27:26,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024770836] [2022-11-02 20:27:26,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:26,616 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:27:26,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:27:26,617 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:27:26,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2022-11-02 20:27:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:27,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 3202 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:27:27,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:27:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 358 proven. 61 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-11-02 20:27:30,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:27:34,780 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 358 proven. 61 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-11-02 20:27:34,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:27:34,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024770836] [2022-11-02 20:27:34,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024770836] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:27:34,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:27:34,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-02 20:27:34,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854053146] [2022-11-02 20:27:34,781 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:27:34,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:27:34,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:27:34,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:27:34,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:27:34,783 INFO L87 Difference]: Start difference. First operand 1939 states and 2621 transitions. Second operand has 12 states, 12 states have (on average 52.25) internal successors, (627), 12 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:36,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:27:36,045 INFO L93 Difference]: Finished difference Result 6567 states and 9074 transitions. [2022-11-02 20:27:36,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:27:36,046 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 52.25) internal successors, (627), 12 states have internal predecessors, (627), 0 states have call successors, (0), 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 536 [2022-11-02 20:27:36,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:27:36,050 INFO L225 Difference]: With dead ends: 6567 [2022-11-02 20:27:36,050 INFO L226 Difference]: Without dead ends: 5025 [2022-11-02 20:27:36,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1080 GetRequests, 1060 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:27:36,053 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 2723 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2723 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:27:36,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2723 Valid, 1719 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:27:36,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5025 states. [2022-11-02 20:27:36,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5025 to 2037. [2022-11-02 20:27:36,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2037 states, 2036 states have (on average 1.3551080550098231) internal successors, (2759), 2036 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:36,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 2759 transitions. [2022-11-02 20:27:36,131 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 2759 transitions. Word has length 536 [2022-11-02 20:27:36,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:36,131 INFO L495 AbstractCegarLoop]: Abstraction has 2037 states and 2759 transitions. [2022-11-02 20:27:36,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 52.25) internal successors, (627), 12 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:36,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 2759 transitions. [2022-11-02 20:27:36,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2022-11-02 20:27:36,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:36,138 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:36,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2022-11-02 20:27:36,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:27:36,351 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:27:36,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:36,352 INFO L85 PathProgramCache]: Analyzing trace with hash -2013628069, now seen corresponding path program 1 times [2022-11-02 20:27:36,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:27:36,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661354960] [2022-11-02 20:27:36,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:36,355 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:27:36,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:27:36,356 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:27:36,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2022-11-02 20:27:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:37,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 3202 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:27:37,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:27:38,576 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 358 proven. 63 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-02 20:27:38,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:27:39,828 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 358 proven. 63 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-02 20:27:39,828 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:27:39,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661354960] [2022-11-02 20:27:39,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661354960] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:27:39,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:27:39,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-02 20:27:39,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244339093] [2022-11-02 20:27:39,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:27:39,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:27:39,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:27:39,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:27:39,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:27:39,832 INFO L87 Difference]: Start difference. First operand 2037 states and 2759 transitions. Second operand has 12 states, 12 states have (on average 51.083333333333336) internal successors, (613), 12 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:40,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:27:40,554 INFO L93 Difference]: Finished difference Result 6431 states and 8902 transitions. [2022-11-02 20:27:40,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:27:40,555 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 51.083333333333336) internal successors, (613), 12 states have internal predecessors, (613), 0 states have call successors, (0), 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 536 [2022-11-02 20:27:40,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:27:40,558 INFO L225 Difference]: With dead ends: 6431 [2022-11-02 20:27:40,558 INFO L226 Difference]: Without dead ends: 4793 [2022-11-02 20:27:40,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1080 GetRequests, 1060 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:27:40,561 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 3299 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3299 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:27:40,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3299 Valid, 1475 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:27:40,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2022-11-02 20:27:40,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 2045. [2022-11-02 20:27:40,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2045 states, 2044 states have (on average 1.3537181996086105) internal successors, (2767), 2044 states have internal predecessors, (2767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:40,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2045 states to 2045 states and 2767 transitions. [2022-11-02 20:27:40,616 INFO L78 Accepts]: Start accepts. Automaton has 2045 states and 2767 transitions. Word has length 536 [2022-11-02 20:27:40,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:40,617 INFO L495 AbstractCegarLoop]: Abstraction has 2045 states and 2767 transitions. [2022-11-02 20:27:40,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.083333333333336) internal successors, (613), 12 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:40,617 INFO L276 IsEmpty]: Start isEmpty. Operand 2045 states and 2767 transitions. [2022-11-02 20:27:40,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2022-11-02 20:27:40,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:40,621 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:40,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (91)] Ended with exit code 0 [2022-11-02 20:27:40,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:27:40,822 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:27:40,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:40,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1722268261, now seen corresponding path program 1 times [2022-11-02 20:27:40,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:27:40,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333773294] [2022-11-02 20:27:40,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:40,825 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:27:40,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:27:40,826 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:27:40,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f885034-61fb-4f9d-83c8-da066f1eee67/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2022-11-02 20:27:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:42,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 3202 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:27:42,019 INFO L286 TraceCheckSpWp]: Computing forward predicates...