./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p1.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_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/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_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/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_c927c475-9f1f-46be-ad3a-d3c035631ff9/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 05c3a93de5aae5fa41d1e1d2d135ef1005843a0f7c5941172978d0f42c601ada --- 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 19:50:33,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:50:33,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:50:33,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:50:33,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:50:33,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:50:33,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:50:33,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:50:33,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:50:33,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:50:33,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:50:33,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:50:33,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:50:33,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:50:33,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:50:33,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:50:33,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:50:33,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:50:33,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:50:33,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:50:33,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:50:33,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:50:33,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:50:33,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:50:33,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:50:33,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:50:33,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:50:33,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:50:33,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:50:33,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:50:33,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:50:33,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:50:33,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:50:33,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:50:33,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:50:33,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:50:33,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:50:33,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:50:33,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:50:33,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:50:33,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:50:33,686 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 19:50:33,713 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:50:33,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:50:33,714 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:50:33,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:50:33,715 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:50:33,716 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:50:33,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:50:33,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:50:33,717 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:50:33,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:50:33,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:50:33,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:50:33,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:50:33,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:50:33,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:50:33,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:50:33,719 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:50:33,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:50:33,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:50:33,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:50:33,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:50:33,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:50:33,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:50:33,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:50:33,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:50:33,722 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:50:33,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:50:33,723 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:50:33,723 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:50:33,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:50:33,724 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_c927c475-9f1f-46be-ad3a-d3c035631ff9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05c3a93de5aae5fa41d1e1d2d135ef1005843a0f7c5941172978d0f42c601ada [2022-11-02 19:50:34,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:50:34,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:50:34,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:50:34,074 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:50:34,075 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:50:34,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p1.c [2022-11-02 19:50:34,178 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/data/0dbb28555/422853ad34d843c49bfa3635ef58d1f2/FLAG92bf95fb4 [2022-11-02 19:50:34,886 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:50:34,887 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p1.c [2022-11-02 19:50:34,898 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/data/0dbb28555/422853ad34d843c49bfa3635ef58d1f2/FLAG92bf95fb4 [2022-11-02 19:50:35,160 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/data/0dbb28555/422853ad34d843c49bfa3635ef58d1f2 [2022-11-02 19:50:35,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:50:35,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:50:35,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:50:35,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:50:35,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:50:35,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:50:35" (1/1) ... [2022-11-02 19:50:35,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2734ee10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:35, skipping insertion in model container [2022-11-02 19:50:35,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:50:35" (1/1) ... [2022-11-02 19:50:35,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:50:35,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:50:35,483 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_c927c475-9f1f-46be-ad3a-d3c035631ff9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p1.c[1107,1120] [2022-11-02 19:50:35,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:50:35,736 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:50:35,750 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_c927c475-9f1f-46be-ad3a-d3c035631ff9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p1.c[1107,1120] [2022-11-02 19:50:35,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:50:35,910 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:50:35,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:35 WrapperNode [2022-11-02 19:50:35,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:50:35,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:50:35,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:50:35,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:50:35,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:35" (1/1) ... [2022-11-02 19:50:35,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:35" (1/1) ... [2022-11-02 19:50:36,095 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 905 [2022-11-02 19:50:36,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:50:36,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:50:36,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:50:36,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:50:36,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:35" (1/1) ... [2022-11-02 19:50:36,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:35" (1/1) ... [2022-11-02 19:50:36,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:35" (1/1) ... [2022-11-02 19:50:36,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:35" (1/1) ... [2022-11-02 19:50:36,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:35" (1/1) ... [2022-11-02 19:50:36,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:35" (1/1) ... [2022-11-02 19:50:36,192 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:35" (1/1) ... [2022-11-02 19:50:36,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:35" (1/1) ... [2022-11-02 19:50:36,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:50:36,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:50:36,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:50:36,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:50:36,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:35" (1/1) ... [2022-11-02 19:50:36,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:50:36,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:50:36,270 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:50:36,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:50:36,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:50:36,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:50:36,681 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:50:36,683 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:50:41,900 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:50:41,912 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:50:41,913 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 19:50:41,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:50:41 BoogieIcfgContainer [2022-11-02 19:50:41,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:50:41,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:50:41,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:50:41,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:50:41,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:50:35" (1/3) ... [2022-11-02 19:50:41,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7a6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:50:41, skipping insertion in model container [2022-11-02 19:50:41,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:35" (2/3) ... [2022-11-02 19:50:41,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7a6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:50:41, skipping insertion in model container [2022-11-02 19:50:41,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:50:41" (3/3) ... [2022-11-02 19:50:41,938 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_s1269b_p1.c [2022-11-02 19:50:41,961 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:50:41,961 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:50:42,045 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:50:42,064 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6918f75b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:50:42,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 19:50:42,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 59 states have (on average 1.4915254237288136) internal successors, (88), 60 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:50:42,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 19:50:42,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:50:42,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 19:50:42,099 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:50:42,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:50:42,108 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 19:50:42,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:50:42,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142150004] [2022-11-02 19:50:42,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:50:42,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:50:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 19:50:42,581 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 19:50:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 19:50:42,816 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 19:50:42,819 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 19:50:42,820 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 19:50:42,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 19:50:42,829 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 19:50:42,836 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 19:50:42,880 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 19:50:42,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 07:50:42 BoogieIcfgContainer [2022-11-02 19:50:42,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 19:50:42,901 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 19:50:42,901 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 19:50:42,901 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 19:50:42,902 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:50:41" (3/4) ... [2022-11-02 19:50:42,910 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 19:50:42,910 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 19:50:42,912 INFO L158 Benchmark]: Toolchain (without parser) took 7744.05ms. Allocated memory was 132.1MB in the beginning and 224.4MB in the end (delta: 92.3MB). Free memory was 95.2MB in the beginning and 146.7MB in the end (delta: -51.6MB). Peak memory consumption was 39.7MB. Max. memory is 16.1GB. [2022-11-02 19:50:42,913 INFO L158 Benchmark]: CDTParser took 1.13ms. Allocated memory is still 86.0MB. Free memory was 56.7MB in the beginning and 56.6MB in the end (delta: 26.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 19:50:42,915 INFO L158 Benchmark]: CACSL2BoogieTranslator took 735.08ms. Allocated memory is still 132.1MB. Free memory was 95.0MB in the beginning and 87.5MB in the end (delta: 7.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 19:50:42,916 INFO L158 Benchmark]: Boogie Procedure Inliner took 183.48ms. Allocated memory is still 132.1MB. Free memory was 87.5MB in the beginning and 71.6MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-02 19:50:42,923 INFO L158 Benchmark]: Boogie Preprocessor took 126.95ms. Allocated memory is still 132.1MB. Free memory was 71.6MB in the beginning and 63.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 19:50:42,924 INFO L158 Benchmark]: RCFGBuilder took 5691.28ms. Allocated memory was 132.1MB in the beginning and 224.4MB in the end (delta: 92.3MB). Free memory was 63.2MB in the beginning and 185.5MB in the end (delta: -122.4MB). Peak memory consumption was 109.2MB. Max. memory is 16.1GB. [2022-11-02 19:50:42,926 INFO L158 Benchmark]: TraceAbstraction took 976.51ms. Allocated memory is still 224.4MB. Free memory was 185.5MB in the beginning and 146.7MB in the end (delta: 38.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-11-02 19:50:42,927 INFO L158 Benchmark]: Witness Printer took 9.12ms. Allocated memory is still 224.4MB. Free memory is still 146.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 19:50:42,937 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.13ms. Allocated memory is still 86.0MB. Free memory was 56.7MB in the beginning and 56.6MB in the end (delta: 26.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 735.08ms. Allocated memory is still 132.1MB. Free memory was 95.0MB in the beginning and 87.5MB in the end (delta: 7.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 183.48ms. Allocated memory is still 132.1MB. Free memory was 87.5MB in the beginning and 71.6MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 126.95ms. Allocated memory is still 132.1MB. Free memory was 71.6MB in the beginning and 63.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 5691.28ms. Allocated memory was 132.1MB in the beginning and 224.4MB in the end (delta: 92.3MB). Free memory was 63.2MB in the beginning and 185.5MB in the end (delta: -122.4MB). Peak memory consumption was 109.2MB. Max. memory is 16.1GB. * TraceAbstraction took 976.51ms. Allocated memory is still 224.4MB. Free memory was 185.5MB in the beginning and 146.7MB in the end (delta: 38.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 9.12ms. Allocated memory is still 224.4MB. Free memory is still 146.7MB. 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 150, overapproximation of bitwiseOr at line 145, overapproximation of bitwiseAnd at line 123. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 3); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (3 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 1); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (1 - 1); [L31] const SORT_12 mask_SORT_12 = (SORT_12)-1 >> (sizeof(SORT_12) * 8 - 8); [L32] const SORT_12 msb_SORT_12 = (SORT_12)1 << (8 - 1); [L34] const SORT_36 mask_SORT_36 = (SORT_36)-1 >> (sizeof(SORT_36) * 8 - 32); [L35] const SORT_36 msb_SORT_36 = (SORT_36)1 << (32 - 1); [L37] const SORT_41 mask_SORT_41 = (SORT_41)-1 >> (sizeof(SORT_41) * 8 - 24); [L38] const SORT_41 msb_SORT_41 = (SORT_41)1 << (24 - 1); [L40] const SORT_81 mask_SORT_81 = (SORT_81)-1 >> (sizeof(SORT_81) * 8 - 2); [L41] const SORT_81 msb_SORT_81 = (SORT_81)1 << (2 - 1); [L43] const SORT_181 mask_SORT_181 = (SORT_181)-1 >> (sizeof(SORT_181) * 8 - 4); [L44] const SORT_181 msb_SORT_181 = (SORT_181)1 << (4 - 1); [L46] const SORT_183 mask_SORT_183 = (SORT_183)-1 >> (sizeof(SORT_183) * 8 - 5); [L47] const SORT_183 msb_SORT_183 = (SORT_183)1 << (5 - 1); [L49] const SORT_185 mask_SORT_185 = (SORT_185)-1 >> (sizeof(SORT_185) * 8 - 6); [L50] const SORT_185 msb_SORT_185 = (SORT_185)1 << (6 - 1); [L52] const SORT_187 mask_SORT_187 = (SORT_187)-1 >> (sizeof(SORT_187) * 8 - 7); [L53] const SORT_187 msb_SORT_187 = (SORT_187)1 << (7 - 1); [L55] const SORT_3 var_14 = 0; [L56] const SORT_3 var_32 = 1; [L57] const SORT_36 var_37 = 0; [L58] const SORT_12 var_38 = 0; [L59] const SORT_41 var_42 = 0; [L60] const SORT_1 var_84 = 0; [L62] SORT_1 input_2; [L63] SORT_3 input_4; [L64] SORT_3 input_5; [L65] SORT_3 input_6; [L66] SORT_3 input_7; [L67] SORT_3 input_8; [L68] SORT_3 input_9; [L69] SORT_3 input_10; [L70] SORT_3 input_11; [L71] SORT_12 input_13; [L72] SORT_3 input_341; [L73] SORT_12 input_352; [L74] SORT_12 input_354; [L75] SORT_12 input_365; [L76] SORT_12 input_366; [L77] SORT_12 input_367; [L79] SORT_3 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L80] SORT_3 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L81] SORT_3 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L82] SORT_3 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L83] SORT_3 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L84] SORT_12 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_12; [L85] SORT_12 state_52 = __VERIFIER_nondet_uchar() & mask_SORT_12; [L86] SORT_3 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L87] SORT_1 state_85 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_12 state_90 = __VERIFIER_nondet_uchar() & mask_SORT_12; [L89] SORT_3 state_99 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L90] SORT_3 state_333 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L91] SORT_3 state_337 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L93] SORT_3 init_16_arg_1 = var_14; [L94] state_15 = init_16_arg_1 [L95] SORT_3 init_18_arg_1 = var_14; [L96] state_17 = init_18_arg_1 [L97] SORT_3 init_21_arg_1 = var_14; [L98] state_20 = init_21_arg_1 [L99] SORT_3 init_24_arg_1 = var_14; [L100] state_23 = init_24_arg_1 [L101] SORT_3 init_28_arg_1 = var_14; [L102] state_27 = init_28_arg_1 [L103] SORT_12 init_40_arg_1 = var_38; [L104] state_39 = init_40_arg_1 [L105] SORT_12 init_53_arg_1 = var_38; [L106] state_52 = init_53_arg_1 [L107] SORT_3 init_62_arg_1 = var_14; [L108] state_61 = init_62_arg_1 [L109] SORT_1 init_86_arg_1 = var_84; [L110] state_85 = init_86_arg_1 [L111] SORT_12 init_91_arg_1 = var_38; [L112] state_90 = init_91_arg_1 [L113] SORT_3 init_100_arg_1 = var_14; [L114] state_99 = init_100_arg_1 [L115] SORT_3 init_334_arg_1 = var_14; [L116] state_333 = init_334_arg_1 [L117] SORT_3 init_338_arg_1 = var_14; [L118] state_337 = init_338_arg_1 VAL [init_100_arg_1=0, init_16_arg_1=0, init_18_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_28_arg_1=0, init_334_arg_1=0, init_338_arg_1=0, init_40_arg_1=0, init_53_arg_1=0, init_62_arg_1=0, init_86_arg_1=0, init_91_arg_1=0, mask_SORT_1=7, mask_SORT_12=255, mask_SORT_181=15, mask_SORT_183=31, mask_SORT_185=63, mask_SORT_187=127, mask_SORT_3=1, mask_SORT_36=4294967295, mask_SORT_41=4294967295, mask_SORT_81=3, msb_SORT_1=4, msb_SORT_12=128, msb_SORT_181=8, msb_SORT_183=16, msb_SORT_185=32, msb_SORT_187=64, msb_SORT_3=1, msb_SORT_36=2147483648, msb_SORT_41=8388608, msb_SORT_81=2, state_15=0, state_17=0, state_20=0, state_23=0, state_27=0, state_333=0, state_337=0, state_39=0, state_52=0, state_61=0, state_85=0, state_90=0, state_99=0, var_14=0, var_32=1, var_37=0, var_38=0, var_42=0, var_84=0] [L121] input_2 = __VERIFIER_nondet_uchar() [L122] input_4 = __VERIFIER_nondet_uchar() [L123] input_4 = input_4 & mask_SORT_3 [L124] input_5 = __VERIFIER_nondet_uchar() [L125] input_5 = input_5 & mask_SORT_3 [L126] input_6 = __VERIFIER_nondet_uchar() [L127] input_6 = input_6 & mask_SORT_3 [L128] input_7 = __VERIFIER_nondet_uchar() [L129] input_8 = __VERIFIER_nondet_uchar() [L130] input_9 = __VERIFIER_nondet_uchar() [L131] input_10 = __VERIFIER_nondet_uchar() [L132] input_10 = input_10 & mask_SORT_3 [L133] input_11 = __VERIFIER_nondet_uchar() [L134] input_13 = __VERIFIER_nondet_uchar() [L135] input_341 = __VERIFIER_nondet_uchar() [L136] input_352 = __VERIFIER_nondet_uchar() [L137] input_354 = __VERIFIER_nondet_uchar() [L138] input_365 = __VERIFIER_nondet_uchar() [L139] input_366 = __VERIFIER_nondet_uchar() [L140] input_367 = __VERIFIER_nondet_uchar() [L143] SORT_3 var_19_arg_0 = state_15; [L144] SORT_3 var_19_arg_1 = state_17; [L145] SORT_3 var_19 = var_19_arg_0 | var_19_arg_1; [L146] SORT_3 var_22_arg_0 = var_19; [L147] SORT_3 var_22_arg_1 = state_20; [L148] SORT_3 var_22 = var_22_arg_0 | var_22_arg_1; [L149] SORT_3 var_25_arg_0 = state_23; [L150] SORT_3 var_25 = ~var_25_arg_0; [L151] SORT_3 var_26_arg_0 = var_22; [L152] SORT_3 var_26_arg_1 = var_25; [L153] SORT_3 var_26 = var_26_arg_0 | var_26_arg_1; [L154] SORT_3 var_29_arg_0 = var_26; [L155] SORT_3 var_29_arg_1 = state_27; [L156] SORT_3 var_29 = var_29_arg_0 | var_29_arg_1; [L157] SORT_3 var_33_arg_0 = var_29; [L158] SORT_3 var_33 = ~var_33_arg_0; [L159] SORT_3 var_34_arg_0 = var_32; [L160] SORT_3 var_34_arg_1 = var_33; [L161] SORT_3 var_34 = var_34_arg_0 & var_34_arg_1; [L162] var_34 = var_34 & mask_SORT_3 [L163] SORT_3 bad_35_arg_0 = var_34; [L164] CALL __VERIFIER_assert(!(bad_35_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, 61 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, 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=61occurred 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, 0.3s 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 19:50:42,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/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_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/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_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/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_c927c475-9f1f-46be-ad3a-d3c035631ff9/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 05c3a93de5aae5fa41d1e1d2d135ef1005843a0f7c5941172978d0f42c601ada --- 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 19:50:45,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:50:45,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:50:45,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:50:45,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:50:45,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:50:45,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:50:45,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:50:45,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:50:45,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:50:45,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:50:45,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:50:45,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:50:45,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:50:45,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:50:45,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:50:45,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:50:45,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:50:45,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:50:45,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:50:45,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:50:45,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:50:45,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:50:45,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:50:45,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:50:45,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:50:45,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:50:45,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:50:45,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:50:45,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:50:45,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:50:45,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:50:45,879 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:50:45,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:50:45,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:50:45,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:50:45,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:50:45,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:50:45,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:50:45,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:50:45,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:50:45,895 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 19:50:45,961 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:50:45,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:50:45,962 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:50:45,963 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:50:45,964 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:50:45,964 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:50:45,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:50:45,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:50:45,966 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:50:45,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:50:45,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:50:45,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:50:45,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:50:45,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:50:45,969 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 19:50:45,969 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 19:50:45,969 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 19:50:45,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:50:45,969 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:50:45,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:50:45,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:50:45,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:50:45,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:50:45,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:50:45,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:50:45,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:50:45,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:50:45,971 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 19:50:45,972 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 19:50:45,972 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:50:45,972 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:50:45,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:50:45,973 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 19:50:45,973 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_c927c475-9f1f-46be-ad3a-d3c035631ff9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05c3a93de5aae5fa41d1e1d2d135ef1005843a0f7c5941172978d0f42c601ada [2022-11-02 19:50:46,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:50:46,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:50:46,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:50:46,455 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:50:46,460 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:50:46,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p1.c [2022-11-02 19:50:46,560 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/data/21bdaabda/7c809747170b4c26b35df871bc808468/FLAG63769201e [2022-11-02 19:50:47,336 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:50:47,337 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p1.c [2022-11-02 19:50:47,358 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/data/21bdaabda/7c809747170b4c26b35df871bc808468/FLAG63769201e [2022-11-02 19:50:47,558 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/data/21bdaabda/7c809747170b4c26b35df871bc808468 [2022-11-02 19:50:47,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:50:47,563 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:50:47,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:50:47,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:50:47,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:50:47,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:50:47" (1/1) ... [2022-11-02 19:50:47,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b776e4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:47, skipping insertion in model container [2022-11-02 19:50:47,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:50:47" (1/1) ... [2022-11-02 19:50:47,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:50:47,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:50:47,856 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_c927c475-9f1f-46be-ad3a-d3c035631ff9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p1.c[1107,1120] [2022-11-02 19:50:48,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:50:48,161 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:50:48,175 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_c927c475-9f1f-46be-ad3a-d3c035631ff9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p1.c[1107,1120] [2022-11-02 19:50:48,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:50:48,395 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:50:48,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:48 WrapperNode [2022-11-02 19:50:48,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:50:48,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:50:48,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:50:48,397 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:50:48,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:48" (1/1) ... [2022-11-02 19:50:48,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:48" (1/1) ... [2022-11-02 19:50:48,525 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 905 [2022-11-02 19:50:48,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:50:48,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:50:48,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:50:48,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:50:48,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:48" (1/1) ... [2022-11-02 19:50:48,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:48" (1/1) ... [2022-11-02 19:50:48,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:48" (1/1) ... [2022-11-02 19:50:48,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:48" (1/1) ... [2022-11-02 19:50:48,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:48" (1/1) ... [2022-11-02 19:50:48,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:48" (1/1) ... [2022-11-02 19:50:48,638 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:48" (1/1) ... [2022-11-02 19:50:48,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:48" (1/1) ... [2022-11-02 19:50:48,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:50:48,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:50:48,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:50:48,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:50:48,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:48" (1/1) ... [2022-11-02 19:50:48,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:50:48,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:50:48,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:50:48,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:50:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:50:48,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:50:49,135 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:50:49,137 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:50:50,142 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:50:50,152 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:50:50,152 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 19:50:50,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:50:50 BoogieIcfgContainer [2022-11-02 19:50:50,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:50:50,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:50:50,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:50:50,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:50:50,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:50:47" (1/3) ... [2022-11-02 19:50:50,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4644b8d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:50:50, skipping insertion in model container [2022-11-02 19:50:50,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:48" (2/3) ... [2022-11-02 19:50:50,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4644b8d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:50:50, skipping insertion in model container [2022-11-02 19:50:50,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:50:50" (3/3) ... [2022-11-02 19:50:50,175 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_s1269b_p1.c [2022-11-02 19:50:50,201 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:50:50,202 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:50:50,306 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:50:50,314 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;@19492057, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:50:50,315 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 19:50:50,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 59 states have (on average 1.4915254237288136) internal successors, (88), 60 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:50:50,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 19:50:50,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:50:50,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 19:50:50,330 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:50:50,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:50:50,336 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 19:50:50,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:50:50,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052254063] [2022-11-02 19:50:50,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:50:50,353 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:50:50,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:50:50,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:50:50,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 19:50:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:50:50,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 19:50:50,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:50:50,891 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 19:50:50,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:50:50,893 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:50:50,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1052254063] [2022-11-02 19:50:50,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1052254063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:50:50,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:50:50,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:50:50,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081313713] [2022-11-02 19:50:50,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:50:50,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:50:50,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:50:50,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:50:50,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:50:50,955 INFO L87 Difference]: Start difference. First operand has 61 states, 59 states have (on average 1.4915254237288136) internal successors, (88), 60 states have internal predecessors, (88), 0 states have call successors, (0), 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 19:50:51,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:50:51,195 INFO L93 Difference]: Finished difference Result 170 states and 255 transitions. [2022-11-02 19:50:51,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:50:51,201 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 19:50:51,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:50:51,221 INFO L225 Difference]: With dead ends: 170 [2022-11-02 19:50:51,222 INFO L226 Difference]: Without dead ends: 111 [2022-11-02 19:50:51,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:50:51,228 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 154 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:50:51,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 225 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:50:51,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-02 19:50:51,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 59. [2022-11-02 19:50:51,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 58 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:50:51,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 84 transitions. [2022-11-02 19:50:51,300 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 84 transitions. Word has length 5 [2022-11-02 19:50:51,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:50:51,300 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 84 transitions. [2022-11-02 19:50:51,301 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 19:50:51,301 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 84 transitions. [2022-11-02 19:50:51,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 19:50:51,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:50:51,304 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] [2022-11-02 19:50:51,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 19:50:51,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:50:51,534 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:50:51,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:50:51,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1364373863, now seen corresponding path program 1 times [2022-11-02 19:50:51,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:50:51,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962813849] [2022-11-02 19:50:51,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:50:51,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:50:51,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:50:51,540 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:50:51,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 19:50:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:50:52,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:50:52,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:50:52,302 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 19:50:52,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:50:52,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:50:52,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962813849] [2022-11-02 19:50:52,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962813849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:50:52,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:50:52,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:50:52,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122347280] [2022-11-02 19:50:52,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:50:52,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:50:52,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:50:52,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:50:52,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:50:52,313 INFO L87 Difference]: Start difference. First operand 59 states and 84 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:50:52,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:50:52,505 INFO L93 Difference]: Finished difference Result 220 states and 319 transitions. [2022-11-02 19:50:52,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:50:52,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-02 19:50:52,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:50:52,508 INFO L225 Difference]: With dead ends: 220 [2022-11-02 19:50:52,508 INFO L226 Difference]: Without dead ends: 165 [2022-11-02 19:50:52,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:50:52,511 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 221 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:50:52,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 578 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 18 Unchecked, 0.1s Time] [2022-11-02 19:50:52,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-02 19:50:52,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 65. [2022-11-02 19:50:52,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.4375) internal successors, (92), 64 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:50:52,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 92 transitions. [2022-11-02 19:50:52,521 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 92 transitions. Word has length 58 [2022-11-02 19:50:52,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:50:52,522 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 92 transitions. [2022-11-02 19:50:52,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:50:52,522 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 92 transitions. [2022-11-02 19:50:52,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 19:50:52,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:50:52,524 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] [2022-11-02 19:50:52,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 19:50:52,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:50:52,748 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:50:52,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:50:52,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1348855145, now seen corresponding path program 1 times [2022-11-02 19:50:52,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:50:52,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526576386] [2022-11-02 19:50:52,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:50:52,751 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:50:52,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:50:52,760 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:50:52,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 19:50:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:50:53,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:50:53,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:50:53,448 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 19:50:53,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:50:53,448 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:50:53,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526576386] [2022-11-02 19:50:53,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526576386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:50:53,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:50:53,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:50:53,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205850339] [2022-11-02 19:50:53,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:50:53,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:50:53,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:50:53,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:50:53,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:50:53,452 INFO L87 Difference]: Start difference. First operand 65 states and 92 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:50:53,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:50:53,614 INFO L93 Difference]: Finished difference Result 220 states and 318 transitions. [2022-11-02 19:50:53,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:50:53,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-02 19:50:53,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:50:53,617 INFO L225 Difference]: With dead ends: 220 [2022-11-02 19:50:53,617 INFO L226 Difference]: Without dead ends: 165 [2022-11-02 19:50:53,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:50:53,622 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 283 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:50:53,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 456 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 36 Unchecked, 0.1s Time] [2022-11-02 19:50:53,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-02 19:50:53,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 67. [2022-11-02 19:50:53,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.4242424242424243) internal successors, (94), 66 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:50:53,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 94 transitions. [2022-11-02 19:50:53,637 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 94 transitions. Word has length 58 [2022-11-02 19:50:53,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:50:53,638 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 94 transitions. [2022-11-02 19:50:53,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:50:53,638 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 94 transitions. [2022-11-02 19:50:53,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 19:50:53,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:50:53,643 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] [2022-11-02 19:50:53,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 19:50:53,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:50:53,861 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:50:53,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:50:53,862 INFO L85 PathProgramCache]: Analyzing trace with hash 995766763, now seen corresponding path program 1 times [2022-11-02 19:50:53,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:50:53,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827289976] [2022-11-02 19:50:53,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:50:53,864 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:50:53,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:50:53,866 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:50:53,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 19:50:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:50:54,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 19:50:54,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:50:54,843 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 19:50:54,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:50:54,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:50:54,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827289976] [2022-11-02 19:50:54,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827289976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:50:54,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:50:54,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:50:54,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659972281] [2022-11-02 19:50:54,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:50:54,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:50:54,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:50:54,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:50:54,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:50:54,851 INFO L87 Difference]: Start difference. First operand 67 states and 94 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:50:55,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:50:55,055 INFO L93 Difference]: Finished difference Result 131 states and 187 transitions. [2022-11-02 19:50:55,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:50:55,057 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-02 19:50:55,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:50:55,057 INFO L225 Difference]: With dead ends: 131 [2022-11-02 19:50:55,058 INFO L226 Difference]: Without dead ends: 76 [2022-11-02 19:50:55,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:50:55,059 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 15 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:50:55,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 503 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 37 Unchecked, 0.1s Time] [2022-11-02 19:50:55,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-02 19:50:55,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2022-11-02 19:50:55,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.4189189189189189) internal successors, (105), 74 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:50:55,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 105 transitions. [2022-11-02 19:50:55,075 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 105 transitions. Word has length 58 [2022-11-02 19:50:55,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:50:55,076 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 105 transitions. [2022-11-02 19:50:55,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:50:55,077 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 105 transitions. [2022-11-02 19:50:55,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 19:50:55,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:50:55,091 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] [2022-11-02 19:50:55,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 19:50:55,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:50:55,309 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:50:55,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:50:55,310 INFO L85 PathProgramCache]: Analyzing trace with hash 98373485, now seen corresponding path program 1 times [2022-11-02 19:50:55,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:50:55,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184376292] [2022-11-02 19:50:55,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:50:55,311 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:50:55,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:50:55,313 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:50:55,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 19:50:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:50:55,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:50:55,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:50:55,942 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 19:50:55,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:50:55,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:50:55,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184376292] [2022-11-02 19:50:55,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184376292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:50:55,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:50:55,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:50:55,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853724236] [2022-11-02 19:50:55,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:50:55,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:50:55,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:50:55,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:50:55,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:50:55,946 INFO L87 Difference]: Start difference. First operand 75 states and 105 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:50:56,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:50:56,078 INFO L93 Difference]: Finished difference Result 190 states and 271 transitions. [2022-11-02 19:50:56,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:50:56,079 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-02 19:50:56,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:50:56,080 INFO L225 Difference]: With dead ends: 190 [2022-11-02 19:50:56,080 INFO L226 Difference]: Without dead ends: 135 [2022-11-02 19:50:56,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:50:56,082 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 92 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:50:56,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 424 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2022-11-02 19:50:56,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-02 19:50:56,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 81. [2022-11-02 19:50:56,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.4) internal successors, (112), 80 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:50:56,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 112 transitions. [2022-11-02 19:50:56,105 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 112 transitions. Word has length 58 [2022-11-02 19:50:56,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:50:56,106 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 112 transitions. [2022-11-02 19:50:56,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:50:56,109 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 112 transitions. [2022-11-02 19:50:56,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 19:50:56,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:50:56,110 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] [2022-11-02 19:50:56,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 19:50:56,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:50:56,311 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:50:56,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:50:56,311 INFO L85 PathProgramCache]: Analyzing trace with hash 522020207, now seen corresponding path program 1 times [2022-11-02 19:50:56,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:50:56,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045923624] [2022-11-02 19:50:56,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:50:56,312 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:50:56,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:50:56,313 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:50:56,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 19:50:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:50:56,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 19:50:56,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:50:57,119 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 19:50:57,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:50:57,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:50:57,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045923624] [2022-11-02 19:50:57,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045923624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:50:57,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:50:57,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:50:57,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766584152] [2022-11-02 19:50:57,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:50:57,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:50:57,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:50:57,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:50:57,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:50:57,125 INFO L87 Difference]: Start difference. First operand 81 states and 112 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:50:57,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:50:57,197 INFO L93 Difference]: Finished difference Result 143 states and 202 transitions. [2022-11-02 19:50:57,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:50:57,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-02 19:50:57,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:50:57,199 INFO L225 Difference]: With dead ends: 143 [2022-11-02 19:50:57,200 INFO L226 Difference]: Without dead ends: 88 [2022-11-02 19:50:57,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:50:57,206 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 9 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:50:57,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 442 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 25 Unchecked, 0.0s Time] [2022-11-02 19:50:57,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-02 19:50:57,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2022-11-02 19:50:57,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.3953488372093024) internal successors, (120), 86 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:50:57,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 120 transitions. [2022-11-02 19:50:57,225 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 120 transitions. Word has length 58 [2022-11-02 19:50:57,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:50:57,226 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 120 transitions. [2022-11-02 19:50:57,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:50:57,227 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 120 transitions. [2022-11-02 19:50:57,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 19:50:57,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:50:57,230 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] [2022-11-02 19:50:57,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 19:50:57,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:50:57,449 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:50:57,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:50:57,449 INFO L85 PathProgramCache]: Analyzing trace with hash -137511315, now seen corresponding path program 1 times [2022-11-02 19:50:57,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:50:57,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644128739] [2022-11-02 19:50:57,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:50:57,451 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:50:57,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:50:57,453 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:50:57,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 19:50:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:50:57,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 19:50:57,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:50:58,667 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 19:50:58,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:50:58,668 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:50:58,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644128739] [2022-11-02 19:50:58,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644128739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:50:58,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:50:58,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:50:58,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964064286] [2022-11-02 19:50:58,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:50:58,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:50:58,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:50:58,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:50:58,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:50:58,671 INFO L87 Difference]: Start difference. First operand 87 states and 120 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:50:58,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:50:58,996 INFO L93 Difference]: Finished difference Result 147 states and 207 transitions. [2022-11-02 19:50:58,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:50:58,997 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-02 19:50:58,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:50:58,998 INFO L225 Difference]: With dead ends: 147 [2022-11-02 19:50:58,998 INFO L226 Difference]: Without dead ends: 92 [2022-11-02 19:50:58,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:50:59,000 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 18 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:50:59,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 499 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 40 Unchecked, 0.1s Time] [2022-11-02 19:50:59,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-02 19:50:59,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2022-11-02 19:50:59,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.3888888888888888) internal successors, (125), 90 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:50:59,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 125 transitions. [2022-11-02 19:50:59,007 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 125 transitions. Word has length 58 [2022-11-02 19:50:59,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:50:59,007 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 125 transitions. [2022-11-02 19:50:59,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:50:59,008 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 125 transitions. [2022-11-02 19:50:59,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 19:50:59,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:50:59,010 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] [2022-11-02 19:50:59,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 19:50:59,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:50:59,234 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:50:59,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:50:59,234 INFO L85 PathProgramCache]: Analyzing trace with hash -209897873, now seen corresponding path program 1 times [2022-11-02 19:50:59,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:50:59,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887744435] [2022-11-02 19:50:59,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:50:59,235 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:50:59,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:50:59,236 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:50:59,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 19:50:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:50:59,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-02 19:50:59,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:01,252 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 19:51:01,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:51:01,253 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:51:01,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887744435] [2022-11-02 19:51:01,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887744435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:51:01,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:51:01,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 19:51:01,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804122754] [2022-11-02 19:51:01,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:51:01,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 19:51:01,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:51:01,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 19:51:01,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-02 19:51:01,256 INFO L87 Difference]: Start difference. First operand 91 states and 125 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:01,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:01,433 INFO L93 Difference]: Finished difference Result 164 states and 228 transitions. [2022-11-02 19:51:01,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 19:51:01,435 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-02 19:51:01,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:01,436 INFO L225 Difference]: With dead ends: 164 [2022-11-02 19:51:01,436 INFO L226 Difference]: Without dead ends: 109 [2022-11-02 19:51:01,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-02 19:51:01,438 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 9 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:51:01,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 709 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 100 Unchecked, 0.1s Time] [2022-11-02 19:51:01,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-02 19:51:01,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2022-11-02 19:51:01,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.3611111111111112) internal successors, (147), 108 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:01,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 147 transitions. [2022-11-02 19:51:01,448 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 147 transitions. Word has length 58 [2022-11-02 19:51:01,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:01,449 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 147 transitions. [2022-11-02 19:51:01,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:01,449 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 147 transitions. [2022-11-02 19:51:01,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 19:51:01,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:01,451 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] [2022-11-02 19:51:01,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:01,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:51:01,669 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:01,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:01,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1713330161, now seen corresponding path program 1 times [2022-11-02 19:51:01,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:01,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930119600] [2022-11-02 19:51:01,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:01,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:01,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:01,672 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:01,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 19:51:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:02,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:51:02,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:02,312 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 19:51:02,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:51:02,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:51:02,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930119600] [2022-11-02 19:51:02,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930119600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:51:02,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:51:02,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:51:02,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677061660] [2022-11-02 19:51:02,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:51:02,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:51:02,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:51:02,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:51:02,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:51:02,317 INFO L87 Difference]: Start difference. First operand 109 states and 147 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:02,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:02,464 INFO L93 Difference]: Finished difference Result 272 states and 383 transitions. [2022-11-02 19:51:02,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:51:02,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-02 19:51:02,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:02,467 INFO L225 Difference]: With dead ends: 272 [2022-11-02 19:51:02,467 INFO L226 Difference]: Without dead ends: 217 [2022-11-02 19:51:02,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:51:02,468 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 176 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:51:02,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 660 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 23 Unchecked, 0.1s Time] [2022-11-02 19:51:02,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-02 19:51:02,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 135. [2022-11-02 19:51:02,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.3805970149253732) internal successors, (185), 134 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:02,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 185 transitions. [2022-11-02 19:51:02,490 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 185 transitions. Word has length 58 [2022-11-02 19:51:02,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:02,490 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 185 transitions. [2022-11-02 19:51:02,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:02,493 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 185 transitions. [2022-11-02 19:51:02,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 19:51:02,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:02,494 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] [2022-11-02 19:51:02,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:02,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:51:02,712 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:02,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:02,713 INFO L85 PathProgramCache]: Analyzing trace with hash -92108173, now seen corresponding path program 1 times [2022-11-02 19:51:02,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:02,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852996656] [2022-11-02 19:51:02,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:02,714 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:02,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:02,725 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:02,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 19:51:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:03,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:51:03,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:03,339 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 19:51:03,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:51:03,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:51:03,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852996656] [2022-11-02 19:51:03,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852996656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:51:03,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:51:03,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:51:03,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750959428] [2022-11-02 19:51:03,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:51:03,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:51:03,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:51:03,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:51:03,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:51:03,343 INFO L87 Difference]: Start difference. First operand 135 states and 185 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:03,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:03,469 INFO L93 Difference]: Finished difference Result 272 states and 382 transitions. [2022-11-02 19:51:03,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:51:03,470 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-02 19:51:03,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:03,471 INFO L225 Difference]: With dead ends: 272 [2022-11-02 19:51:03,471 INFO L226 Difference]: Without dead ends: 217 [2022-11-02 19:51:03,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:51:03,473 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 210 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:51:03,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 510 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 23 Unchecked, 0.1s Time] [2022-11-02 19:51:03,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-02 19:51:03,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 137. [2022-11-02 19:51:03,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.375) internal successors, (187), 136 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:03,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 187 transitions. [2022-11-02 19:51:03,480 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 187 transitions. Word has length 58 [2022-11-02 19:51:03,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:03,481 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 187 transitions. [2022-11-02 19:51:03,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:03,481 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 187 transitions. [2022-11-02 19:51:03,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 19:51:03,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:03,483 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] [2022-11-02 19:51:03,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:03,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:51:03,701 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:03,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:03,702 INFO L85 PathProgramCache]: Analyzing trace with hash 330593653, now seen corresponding path program 1 times [2022-11-02 19:51:03,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:03,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634333672] [2022-11-02 19:51:03,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:03,703 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:03,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:03,705 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:03,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 19:51:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:04,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:51:04,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:04,338 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 19:51:04,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:51:04,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:51:04,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634333672] [2022-11-02 19:51:04,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634333672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:51:04,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:51:04,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:51:04,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867605933] [2022-11-02 19:51:04,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:51:04,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:51:04,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:51:04,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:51:04,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:51:04,350 INFO L87 Difference]: Start difference. First operand 137 states and 187 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:04,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:04,499 INFO L93 Difference]: Finished difference Result 272 states and 381 transitions. [2022-11-02 19:51:04,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:51:04,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-02 19:51:04,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:04,502 INFO L225 Difference]: With dead ends: 272 [2022-11-02 19:51:04,502 INFO L226 Difference]: Without dead ends: 217 [2022-11-02 19:51:04,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:51:04,503 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 188 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:51:04,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 528 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 27 Unchecked, 0.1s Time] [2022-11-02 19:51:04,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-02 19:51:04,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 145. [2022-11-02 19:51:04,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.375) internal successors, (198), 144 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:04,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 198 transitions. [2022-11-02 19:51:04,512 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 198 transitions. Word has length 58 [2022-11-02 19:51:04,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:04,513 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 198 transitions. [2022-11-02 19:51:04,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:04,514 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 198 transitions. [2022-11-02 19:51:04,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 19:51:04,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:04,517 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] [2022-11-02 19:51:04,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:04,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:51:04,718 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:04,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:04,719 INFO L85 PathProgramCache]: Analyzing trace with hash -256212361, now seen corresponding path program 1 times [2022-11-02 19:51:04,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:04,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589415060] [2022-11-02 19:51:04,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:04,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:04,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:04,721 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:04,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 19:51:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:05,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 19:51:05,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:05,830 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 19:51:05,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:51:05,834 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:51:05,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589415060] [2022-11-02 19:51:05,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589415060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:51:05,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:51:05,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 19:51:05,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795685567] [2022-11-02 19:51:05,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:51:05,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 19:51:05,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:51:05,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 19:51:05,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:51:05,837 INFO L87 Difference]: Start difference. First operand 145 states and 198 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:05,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:05,855 INFO L93 Difference]: Finished difference Result 225 states and 314 transitions. [2022-11-02 19:51:05,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:51:05,857 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-02 19:51:05,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:05,858 INFO L225 Difference]: With dead ends: 225 [2022-11-02 19:51:05,858 INFO L226 Difference]: Without dead ends: 170 [2022-11-02 19:51:05,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:51:05,859 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 53 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:51:05,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 503 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 27 Unchecked, 0.0s Time] [2022-11-02 19:51:05,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-02 19:51:05,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 169. [2022-11-02 19:51:05,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.380952380952381) internal successors, (232), 168 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:05,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 232 transitions. [2022-11-02 19:51:05,867 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 232 transitions. Word has length 58 [2022-11-02 19:51:05,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:05,867 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 232 transitions. [2022-11-02 19:51:05,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:05,868 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 232 transitions. [2022-11-02 19:51:05,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 19:51:05,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:05,869 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] [2022-11-02 19:51:05,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:06,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:51:06,089 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:06,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:06,090 INFO L85 PathProgramCache]: Analyzing trace with hash 423846009, now seen corresponding path program 1 times [2022-11-02 19:51:06,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:06,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617694646] [2022-11-02 19:51:06,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:06,091 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:06,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:06,092 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:06,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 19:51:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:06,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 19:51:06,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:06,828 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 19:51:06,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:51:06,828 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:51:06,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617694646] [2022-11-02 19:51:06,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617694646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:51:06,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:51:06,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 19:51:06,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940898941] [2022-11-02 19:51:06,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:51:06,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:51:06,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:51:06,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:51:06,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:51:06,831 INFO L87 Difference]: Start difference. First operand 169 states and 232 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:06,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:06,955 INFO L93 Difference]: Finished difference Result 242 states and 338 transitions. [2022-11-02 19:51:06,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:51:06,956 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-02 19:51:06,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:06,959 INFO L225 Difference]: With dead ends: 242 [2022-11-02 19:51:06,959 INFO L226 Difference]: Without dead ends: 187 [2022-11-02 19:51:06,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:51:06,960 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 24 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:51:06,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 339 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 32 Unchecked, 0.1s Time] [2022-11-02 19:51:06,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-02 19:51:06,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2022-11-02 19:51:06,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.381720430107527) internal successors, (257), 186 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:06,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 257 transitions. [2022-11-02 19:51:06,970 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 257 transitions. Word has length 58 [2022-11-02 19:51:06,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:06,970 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 257 transitions. [2022-11-02 19:51:06,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:06,971 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 257 transitions. [2022-11-02 19:51:06,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 19:51:06,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:06,972 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] [2022-11-02 19:51:06,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:07,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:51:07,177 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:07,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:07,177 INFO L85 PathProgramCache]: Analyzing trace with hash 421998967, now seen corresponding path program 1 times [2022-11-02 19:51:07,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:07,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531984877] [2022-11-02 19:51:07,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:07,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:07,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:07,179 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:07,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 19:51:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:07,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 82 conjunts are in the unsatisfiable core [2022-11-02 19:51:07,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:08,301 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 19:51:08,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:51:08,952 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 19:51:08,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:51:08,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531984877] [2022-11-02 19:51:08,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531984877] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:51:08,953 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:51:08,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-02 19:51:08,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226294015] [2022-11-02 19:51:08,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:51:08,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 19:51:08,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:51:08,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 19:51:08,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:51:08,955 INFO L87 Difference]: Start difference. First operand 187 states and 257 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:09,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:09,151 INFO L93 Difference]: Finished difference Result 256 states and 357 transitions. [2022-11-02 19:51:09,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:51:09,152 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 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 58 [2022-11-02 19:51:09,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:09,153 INFO L225 Difference]: With dead ends: 256 [2022-11-02 19:51:09,153 INFO L226 Difference]: Without dead ends: 254 [2022-11-02 19:51:09,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-02 19:51:09,154 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 136 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:51:09,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 765 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 64 Unchecked, 0.1s Time] [2022-11-02 19:51:09,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-02 19:51:09,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 202. [2022-11-02 19:51:09,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.3830845771144278) internal successors, (278), 201 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 19:51:09,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 278 transitions. [2022-11-02 19:51:09,162 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 278 transitions. Word has length 58 [2022-11-02 19:51:09,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:09,162 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 278 transitions. [2022-11-02 19:51:09,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:09,163 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 278 transitions. [2022-11-02 19:51:09,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 19:51:09,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:09,164 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, 1, 1, 1, 1, 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 19:51:09,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:09,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:51:09,378 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:09,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:09,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2142118201, now seen corresponding path program 1 times [2022-11-02 19:51:09,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:09,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730383412] [2022-11-02 19:51:09,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:09,381 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:09,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:09,382 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:09,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 19:51:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:09,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:51:09,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 49 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:51:10,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:51:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 19:51:10,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:51:10,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730383412] [2022-11-02 19:51:10,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730383412] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 19:51:10,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:51:10,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 19:51:10,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858705314] [2022-11-02 19:51:10,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:51:10,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:51:10,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:51:10,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:51:10,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:51:10,196 INFO L87 Difference]: Start difference. First operand 202 states and 278 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:10,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:10,305 INFO L93 Difference]: Finished difference Result 521 states and 731 transitions. [2022-11-02 19:51:10,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:51:10,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 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 111 [2022-11-02 19:51:10,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:10,309 INFO L225 Difference]: With dead ends: 521 [2022-11-02 19:51:10,309 INFO L226 Difference]: Without dead ends: 466 [2022-11-02 19:51:10,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:51:10,312 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 349 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:51:10,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 303 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:51:10,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-11-02 19:51:10,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 204. [2022-11-02 19:51:10,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.3793103448275863) internal successors, (280), 203 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 19:51:10,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 280 transitions. [2022-11-02 19:51:10,325 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 280 transitions. Word has length 111 [2022-11-02 19:51:10,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:10,326 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 280 transitions. [2022-11-02 19:51:10,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:10,327 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 280 transitions. [2022-11-02 19:51:10,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 19:51:10,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:10,330 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, 1, 1, 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 19:51:10,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:10,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:51:10,553 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:10,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:10,554 INFO L85 PathProgramCache]: Analyzing trace with hash 2126599483, now seen corresponding path program 1 times [2022-11-02 19:51:10,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:10,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829799486] [2022-11-02 19:51:10,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:10,555 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:10,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:10,556 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:10,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 19:51:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:11,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:51:11,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 47 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:51:11,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:51:11,384 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 19:51:11,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:51:11,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829799486] [2022-11-02 19:51:11,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829799486] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 19:51:11,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:51:11,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 19:51:11,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705028145] [2022-11-02 19:51:11,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:51:11,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:51:11,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:51:11,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:51:11,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:51:11,387 INFO L87 Difference]: Start difference. First operand 204 states and 280 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:11,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:11,502 INFO L93 Difference]: Finished difference Result 553 states and 773 transitions. [2022-11-02 19:51:11,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:51:11,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 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 111 [2022-11-02 19:51:11,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:11,506 INFO L225 Difference]: With dead ends: 553 [2022-11-02 19:51:11,506 INFO L226 Difference]: Without dead ends: 496 [2022-11-02 19:51:11,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:51:11,508 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 343 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 306 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 19:51:11,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 306 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:51:11,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-11-02 19:51:11,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 206. [2022-11-02 19:51:11,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.3756097560975609) internal successors, (282), 205 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 19:51:11,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 282 transitions. [2022-11-02 19:51:11,518 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 282 transitions. Word has length 111 [2022-11-02 19:51:11,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:11,519 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 282 transitions. [2022-11-02 19:51:11,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:11,519 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 282 transitions. [2022-11-02 19:51:11,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 19:51:11,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:11,521 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, 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 19:51:11,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:11,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:51:11,744 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:11,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:11,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1773511101, now seen corresponding path program 1 times [2022-11-02 19:51:11,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:11,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198144375] [2022-11-02 19:51:11,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:11,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:11,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:11,748 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:11,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 19:51:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:12,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:51:12,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:12,615 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 41 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:51:12,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:51:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 19:51:12,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:51:12,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198144375] [2022-11-02 19:51:12,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198144375] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 19:51:12,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:51:12,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 19:51:12,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30179489] [2022-11-02 19:51:12,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:51:12,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:51:12,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:51:12,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:51:12,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:51:12,670 INFO L87 Difference]: Start difference. First operand 206 states and 282 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:12,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:12,797 INFO L93 Difference]: Finished difference Result 549 states and 765 transitions. [2022-11-02 19:51:12,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:51:12,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 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 111 [2022-11-02 19:51:12,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:12,800 INFO L225 Difference]: With dead ends: 549 [2022-11-02 19:51:12,801 INFO L226 Difference]: Without dead ends: 490 [2022-11-02 19:51:12,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:51:12,803 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 337 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:51:12,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 311 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:51:12,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-11-02 19:51:12,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 212. [2022-11-02 19:51:12,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.3744075829383886) internal successors, (290), 211 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:12,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 290 transitions. [2022-11-02 19:51:12,814 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 290 transitions. Word has length 111 [2022-11-02 19:51:12,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:12,814 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 290 transitions. [2022-11-02 19:51:12,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:12,815 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 290 transitions. [2022-11-02 19:51:12,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 19:51:12,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:12,816 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, 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 19:51:12,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:13,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:51:13,038 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:13,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:13,039 INFO L85 PathProgramCache]: Analyzing trace with hash -2097809473, now seen corresponding path program 1 times [2022-11-02 19:51:13,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:13,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267709725] [2022-11-02 19:51:13,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:13,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:13,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:13,041 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:13,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 19:51:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:13,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:51:13,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:13,871 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 19:51:13,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:51:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 19:51:13,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:51:13,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267709725] [2022-11-02 19:51:13,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267709725] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 19:51:13,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:51:13,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-11-02 19:51:13,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937469456] [2022-11-02 19:51:13,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:51:13,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:51:13,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:51:13,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:51:13,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:51:13,918 INFO L87 Difference]: Start difference. First operand 212 states and 290 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:14,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:14,048 INFO L93 Difference]: Finished difference Result 655 states and 908 transitions. [2022-11-02 19:51:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:51:14,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 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 111 [2022-11-02 19:51:14,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:14,052 INFO L225 Difference]: With dead ends: 655 [2022-11-02 19:51:14,052 INFO L226 Difference]: Without dead ends: 511 [2022-11-02 19:51:14,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 217 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 19:51:14,053 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 235 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:51:14,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 557 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:51:14,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2022-11-02 19:51:14,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 216. [2022-11-02 19:51:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.3674418604651162) internal successors, (294), 215 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 294 transitions. [2022-11-02 19:51:14,064 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 294 transitions. Word has length 111 [2022-11-02 19:51:14,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:14,065 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 294 transitions. [2022-11-02 19:51:14,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:51:14,066 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 294 transitions. [2022-11-02 19:51:14,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 19:51:14,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:14,067 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, 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 19:51:14,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:14,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:51:14,293 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:14,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:14,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1353152321, now seen corresponding path program 1 times [2022-11-02 19:51:14,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:14,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252463337] [2022-11-02 19:51:14,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:14,295 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:14,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:14,297 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:14,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 19:51:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:14,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 111 conjunts are in the unsatisfiable core [2022-11-02 19:51:14,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:04,018 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:04,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:52:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 19:52:15,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:15,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252463337] [2022-11-02 19:52:15,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252463337] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:52:15,164 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:52:15,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35 [2022-11-02 19:52:15,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233453160] [2022-11-02 19:52:15,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:52:15,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-02 19:52:15,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:15,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-02 19:52:15,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1059, Unknown=24, NotChecked=0, Total=1190 [2022-11-02 19:52:15,167 INFO L87 Difference]: Start difference. First operand 216 states and 294 transitions. Second operand has 35 states, 35 states have (on average 5.514285714285714) internal successors, (193), 35 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:10,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:10,926 INFO L93 Difference]: Finished difference Result 433 states and 591 transitions. [2022-11-02 19:54:10,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 19:54:10,927 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.514285714285714) internal successors, (193), 35 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-11-02 19:54:10,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:10,929 INFO L225 Difference]: With dead ends: 433 [2022-11-02 19:54:10,929 INFO L226 Difference]: Without dead ends: 366 [2022-11-02 19:54:10,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 186 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 171.6s TimeCoverageRelationStatistics Valid=239, Invalid=2809, Unknown=32, NotChecked=0, Total=3080 [2022-11-02 19:54:10,931 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 456 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:10,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1763 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 130 Unchecked, 0.1s Time] [2022-11-02 19:54:10,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-11-02 19:54:10,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 350. [2022-11-02 19:54:10,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 1.3667621776504297) internal successors, (477), 349 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:10,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 477 transitions. [2022-11-02 19:54:10,947 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 477 transitions. Word has length 111 [2022-11-02 19:54:10,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:10,947 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 477 transitions. [2022-11-02 19:54:10,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.514285714285714) internal successors, (193), 35 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:10,948 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 477 transitions. [2022-11-02 19:54:10,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 19:54:10,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:10,950 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, 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 19:54:10,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-11-02 19:54:11,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:11,165 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:11,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:11,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1018586941, now seen corresponding path program 1 times [2022-11-02 19:54:11,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:11,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037582902] [2022-11-02 19:54:11,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:11,167 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:11,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:11,168 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:11,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c927c475-9f1f-46be-ad3a-d3c035631ff9/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 19:54:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:11,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 111 conjunts are in the unsatisfiable core [2022-11-02 19:54:11,803 INFO L286 TraceCheckSpWp]: Computing forward predicates...