./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w32_d32_e0.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/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_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w32_d32_e0.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/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_1df2db74-fda8-4786-8ccc-f14bfd23d56b/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 9ba147ac8291e28f58b380618807891744f57684c383d3cb74aace0b466acfd6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:35:17,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:35:17,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:35:17,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:35:17,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:35:17,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:35:17,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:35:17,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:35:17,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:35:17,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:35:17,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:35:17,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:35:17,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:35:17,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:35:17,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:35:17,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:35:17,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:35:17,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:35:17,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:35:17,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:35:17,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:35:17,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:35:17,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:35:17,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:35:17,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:35:17,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:35:17,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:35:17,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:35:17,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:35:17,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:35:17,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:35:17,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:35:17,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:35:17,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:35:17,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:35:17,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:35:17,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:35:17,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:35:17,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:35:17,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:35:17,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:35:17,814 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:35:17,841 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:35:17,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:35:17,842 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:35:17,842 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:35:17,843 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:35:17,843 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:35:17,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:35:17,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:35:17,844 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:35:17,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:35:17,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:35:17,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:35:17,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:35:17,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:35:17,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:35:17,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:35:17,847 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:35:17,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:35:17,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:35:17,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:35:17,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:35:17,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:35:17,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:35:17,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:35:17,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:35:17,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:35:17,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:35:17,850 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:35:17,850 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:35:17,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:35:17,850 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_1df2db74-fda8-4786-8ccc-f14bfd23d56b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ba147ac8291e28f58b380618807891744f57684c383d3cb74aace0b466acfd6 [2022-11-02 20:35:18,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:35:18,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:35:18,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:35:18,187 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:35:18,188 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:35:18,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w32_d32_e0.c [2022-11-02 20:35:18,271 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/data/aa9e34166/5c4257bef0fa4fe58a0870b15fd2e34e/FLAG56cc26308 [2022-11-02 20:35:19,031 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:35:19,032 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w32_d32_e0.c [2022-11-02 20:35:19,063 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/data/aa9e34166/5c4257bef0fa4fe58a0870b15fd2e34e/FLAG56cc26308 [2022-11-02 20:35:19,146 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/data/aa9e34166/5c4257bef0fa4fe58a0870b15fd2e34e [2022-11-02 20:35:19,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:35:19,154 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:35:19,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:35:19,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:35:19,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:35:19,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:35:19" (1/1) ... [2022-11-02 20:35:19,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d91273d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:19, skipping insertion in model container [2022-11-02 20:35:19,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:35:19" (1/1) ... [2022-11-02 20:35:19,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:35:19,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:35:19,583 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_1df2db74-fda8-4786-8ccc-f14bfd23d56b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w32_d32_e0.c[1110,1123] [2022-11-02 20:35:20,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:35:20,265 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:35:20,280 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_1df2db74-fda8-4786-8ccc-f14bfd23d56b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w32_d32_e0.c[1110,1123] [2022-11-02 20:35:20,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:35:20,638 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:35:20,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:20 WrapperNode [2022-11-02 20:35:20,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:35:20,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:35:20,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:35:20,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:35:20,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:20" (1/1) ... [2022-11-02 20:35:20,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:20" (1/1) ... [2022-11-02 20:35:21,088 INFO L138 Inliner]: procedures = 11, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3597 [2022-11-02 20:35:21,089 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:35:21,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:35:21,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:35:21,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:35:21,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:20" (1/1) ... [2022-11-02 20:35:21,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:20" (1/1) ... [2022-11-02 20:35:21,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:20" (1/1) ... [2022-11-02 20:35:21,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:20" (1/1) ... [2022-11-02 20:35:21,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:20" (1/1) ... [2022-11-02 20:35:21,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:20" (1/1) ... [2022-11-02 20:35:21,462 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:20" (1/1) ... [2022-11-02 20:35:21,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:20" (1/1) ... [2022-11-02 20:35:21,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:35:21,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:35:21,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:35:21,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:35:21,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:20" (1/1) ... [2022-11-02 20:35:21,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:35:21,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:35:21,589 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:35:21,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:35:21,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:35:21,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:35:21,662 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:35:21,663 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:35:22,663 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:35:22,666 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:35:39,436 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:35:39,460 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:35:39,460 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:35:39,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:35:39 BoogieIcfgContainer [2022-11-02 20:35:39,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:35:39,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:35:39,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:35:39,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:35:39,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:35:19" (1/3) ... [2022-11-02 20:35:39,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94ad3ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:35:39, skipping insertion in model container [2022-11-02 20:35:39,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:20" (2/3) ... [2022-11-02 20:35:39,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94ad3ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:35:39, skipping insertion in model container [2022-11-02 20:35:39,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:35:39" (3/3) ... [2022-11-02 20:35:39,478 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n2_w32_d32_e0.c [2022-11-02 20:35:39,505 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:35:39,505 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:35:39,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:35:39,623 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;@64ee1b8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:35:39,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:35:39,632 INFO L276 IsEmpty]: Start isEmpty. Operand has 459 states, 449 states have (on average 1.489977728285078) internal successors, (669), 450 states have internal predecessors, (669), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-02 20:35:39,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-02 20:35:39,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:39,671 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:39,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:39,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:39,682 INFO L85 PathProgramCache]: Analyzing trace with hash -2105689454, now seen corresponding path program 1 times [2022-11-02 20:35:39,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:39,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342208646] [2022-11-02 20:35:39,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:39,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:04,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:36:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:04,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:36:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:04,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:36:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:04,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:36:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:04,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:36:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:04,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:36:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:04,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:36:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:04,887 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-02 20:36:04,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:04,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342208646] [2022-11-02 20:36:04,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342208646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:04,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:04,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:36:04,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800054553] [2022-11-02 20:36:04,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:04,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:36:04,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:04,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:36:04,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:36:04,943 INFO L87 Difference]: Start difference. First operand has 459 states, 449 states have (on average 1.489977728285078) internal successors, (669), 450 states have internal predecessors, (669), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-02 20:36:06,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:06,804 INFO L93 Difference]: Finished difference Result 1406 states and 2124 transitions. [2022-11-02 20:36:06,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:36:06,807 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 181 [2022-11-02 20:36:06,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:06,826 INFO L225 Difference]: With dead ends: 1406 [2022-11-02 20:36:06,826 INFO L226 Difference]: Without dead ends: 949 [2022-11-02 20:36:06,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:36:06,835 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 4555 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4555 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:06,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4555 Valid, 2192 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:36:06,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-11-02 20:36:06,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 469. [2022-11-02 20:36:06,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 460 states have (on average 1.482608695652174) internal successors, (682), 460 states have internal predecessors, (682), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-02 20:36:06,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 696 transitions. [2022-11-02 20:36:06,979 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 696 transitions. Word has length 181 [2022-11-02 20:36:06,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:06,980 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 696 transitions. [2022-11-02 20:36:06,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-02 20:36:06,981 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 696 transitions. [2022-11-02 20:36:06,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-02 20:36:06,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:06,994 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:06,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:36:06,995 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:06,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:06,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1856634704, now seen corresponding path program 1 times [2022-11-02 20:36:06,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:06,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186131364] [2022-11-02 20:36:06,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:06,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:22,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:36:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:22,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:36:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:22,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:36:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:22,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:36:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:22,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:36:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:22,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:36:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:23,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:36:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:23,012 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-02 20:36:23,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:23,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186131364] [2022-11-02 20:36:23,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186131364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:23,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:23,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:36:23,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626877285] [2022-11-02 20:36:23,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:23,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:36:23,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:23,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:36:23,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:36:23,026 INFO L87 Difference]: Start difference. First operand 469 states and 696 transitions. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-02 20:36:24,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:24,915 INFO L93 Difference]: Finished difference Result 1444 states and 2147 transitions. [2022-11-02 20:36:24,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:36:24,916 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 181 [2022-11-02 20:36:24,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:24,920 INFO L225 Difference]: With dead ends: 1444 [2022-11-02 20:36:24,921 INFO L226 Difference]: Without dead ends: 977 [2022-11-02 20:36:24,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:36:24,925 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 5187 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5187 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:24,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5187 Valid, 2274 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:36:24,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-11-02 20:36:24,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 483. [2022-11-02 20:36:24,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 474 states have (on average 1.481012658227848) internal successors, (702), 474 states have internal predecessors, (702), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-02 20:36:24,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 716 transitions. [2022-11-02 20:36:24,955 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 716 transitions. Word has length 181 [2022-11-02 20:36:24,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:24,956 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 716 transitions. [2022-11-02 20:36:24,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-02 20:36:24,956 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 716 transitions. [2022-11-02 20:36:24,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-02 20:36:24,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:24,961 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:24,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:36:24,961 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:24,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:24,962 INFO L85 PathProgramCache]: Analyzing trace with hash -10073970, now seen corresponding path program 1 times [2022-11-02 20:36:24,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:24,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246895109] [2022-11-02 20:36:24,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:24,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:37,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:36:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:37,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:36:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:37,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:36:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:37,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:36:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:37,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:36:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:37,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:36:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:37,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:36:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:37,827 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-02 20:36:37,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:37,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246895109] [2022-11-02 20:36:37,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246895109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:37,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:37,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:36:37,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675558325] [2022-11-02 20:36:37,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:37,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:36:37,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:37,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:36:37,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:36:37,834 INFO L87 Difference]: Start difference. First operand 483 states and 716 transitions. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-02 20:36:39,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:39,612 INFO L93 Difference]: Finished difference Result 1442 states and 2142 transitions. [2022-11-02 20:36:39,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:36:39,613 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 181 [2022-11-02 20:36:39,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:39,617 INFO L225 Difference]: With dead ends: 1442 [2022-11-02 20:36:39,618 INFO L226 Difference]: Without dead ends: 961 [2022-11-02 20:36:39,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:36:39,621 INFO L413 NwaCegarLoop]: 734 mSDtfsCounter, 4561 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4561 SdHoareTripleChecker+Valid, 2210 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:39,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4561 Valid, 2210 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:36:39,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-11-02 20:36:39,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 483. [2022-11-02 20:36:39,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 474 states have (on average 1.478902953586498) internal successors, (701), 474 states have internal predecessors, (701), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-02 20:36:39,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 715 transitions. [2022-11-02 20:36:39,651 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 715 transitions. Word has length 181 [2022-11-02 20:36:39,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:39,651 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 715 transitions. [2022-11-02 20:36:39,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-02 20:36:39,652 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 715 transitions. [2022-11-02 20:36:39,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-02 20:36:39,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:39,717 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:39,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:36:39,718 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:39,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:39,718 INFO L85 PathProgramCache]: Analyzing trace with hash -2141424692, now seen corresponding path program 1 times [2022-11-02 20:36:39,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:39,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555479845] [2022-11-02 20:36:39,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:39,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:45,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:36:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:45,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:36:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:45,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:36:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:45,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:36:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:45,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:36:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:45,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:36:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:45,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:36:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:45,768 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-02 20:36:45,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:45,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555479845] [2022-11-02 20:36:45,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555479845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:45,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:45,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:36:45,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490628510] [2022-11-02 20:36:45,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:45,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:36:45,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:45,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:36:45,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:36:45,772 INFO L87 Difference]: Start difference. First operand 483 states and 715 transitions. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-02 20:36:46,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:46,297 INFO L93 Difference]: Finished difference Result 1300 states and 1927 transitions. [2022-11-02 20:36:46,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:36:46,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 181 [2022-11-02 20:36:46,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:46,303 INFO L225 Difference]: With dead ends: 1300 [2022-11-02 20:36:46,303 INFO L226 Difference]: Without dead ends: 1298 [2022-11-02 20:36:46,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:36:46,305 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 4423 mSDsluCounter, 2054 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4423 SdHoareTripleChecker+Valid, 2947 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:46,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4423 Valid, 2947 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:36:46,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2022-11-02 20:36:46,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 645. [2022-11-02 20:36:46,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 636 states have (on average 1.4779874213836477) internal successors, (940), 636 states have internal predecessors, (940), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-02 20:36:46,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 954 transitions. [2022-11-02 20:36:46,336 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 954 transitions. Word has length 181 [2022-11-02 20:36:46,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:46,337 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 954 transitions. [2022-11-02 20:36:46,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-02 20:36:46,343 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 954 transitions. [2022-11-02 20:36:46,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-02 20:36:46,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:46,348 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:46,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:36:46,348 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:46,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:46,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1723535990, now seen corresponding path program 1 times [2022-11-02 20:36:46,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:46,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082325445] [2022-11-02 20:36:46,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:46,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:47,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:36:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:47,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:36:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:47,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:36:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:47,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:36:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:47,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:36:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:47,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:36:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:47,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:36:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-02 20:36:47,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:47,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082325445] [2022-11-02 20:36:47,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082325445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:47,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:47,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:36:47,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748802992] [2022-11-02 20:36:47,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:47,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:36:47,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:47,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:36:47,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:36:47,290 INFO L87 Difference]: Start difference. First operand 645 states and 954 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-02 20:36:47,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:47,789 INFO L93 Difference]: Finished difference Result 1778 states and 2636 transitions. [2022-11-02 20:36:47,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:36:47,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 181 [2022-11-02 20:36:47,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:47,801 INFO L225 Difference]: With dead ends: 1778 [2022-11-02 20:36:47,801 INFO L226 Difference]: Without dead ends: 1135 [2022-11-02 20:36:47,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:36:47,808 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 1299 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 2071 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:47,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1306 Valid, 2071 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:36:47,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2022-11-02 20:36:47,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 661. [2022-11-02 20:36:47,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 645 states have (on average 1.4713178294573643) internal successors, (949), 645 states have internal predecessors, (949), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-02 20:36:47,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 977 transitions. [2022-11-02 20:36:47,849 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 977 transitions. Word has length 181 [2022-11-02 20:36:47,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:47,849 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 977 transitions. [2022-11-02 20:36:47,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-02 20:36:47,849 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 977 transitions. [2022-11-02 20:36:47,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2022-11-02 20:36:47,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:47,866 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:47,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:36:47,868 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:47,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:47,869 INFO L85 PathProgramCache]: Analyzing trace with hash 2077134423, now seen corresponding path program 1 times [2022-11-02 20:36:47,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:47,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059383760] [2022-11-02 20:36:47,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:47,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:52,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:36:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:52,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:36:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:52,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:36:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:52,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:36:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:52,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:36:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:52,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:36:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:52,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:36:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:52,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-11-02 20:36:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:52,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-11-02 20:36:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:52,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-11-02 20:36:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:52,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-11-02 20:36:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:52,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-11-02 20:36:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:52,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-11-02 20:36:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:52,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-11-02 20:36:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:52,960 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-02 20:36:52,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:52,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059383760] [2022-11-02 20:36:52,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059383760] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:36:52,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65675488] [2022-11-02 20:36:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:52,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:36:52,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:36:52,967 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:36:52,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:36:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:55,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 7487 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:36:55,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:36:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-02 20:36:56,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:36:56,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65675488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:56,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:36:56,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:36:56,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088320473] [2022-11-02 20:36:56,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:56,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:36:56,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:56,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:36:56,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:36:56,126 INFO L87 Difference]: Start difference. First operand 661 states and 977 transitions. Second operand has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:36:56,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:56,815 INFO L93 Difference]: Finished difference Result 2891 states and 4280 transitions. [2022-11-02 20:36:56,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:36:56,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 656 [2022-11-02 20:36:56,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:56,825 INFO L225 Difference]: With dead ends: 2891 [2022-11-02 20:36:56,826 INFO L226 Difference]: Without dead ends: 2248 [2022-11-02 20:36:56,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:36:56,833 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 3091 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3098 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:56,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3098 Valid, 2649 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:36:56,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2022-11-02 20:36:56,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 989. [2022-11-02 20:36:56,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 973 states have (on average 1.472764645426516) internal successors, (1433), 973 states have internal predecessors, (1433), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-02 20:36:56,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1461 transitions. [2022-11-02 20:36:56,885 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1461 transitions. Word has length 656 [2022-11-02 20:36:56,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:56,886 INFO L495 AbstractCegarLoop]: Abstraction has 989 states and 1461 transitions. [2022-11-02 20:36:56,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:36:56,886 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1461 transitions. [2022-11-02 20:36:56,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2022-11-02 20:36:56,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:56,903 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:56,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:36:57,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:36:57,127 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:57,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:57,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1770787669, now seen corresponding path program 1 times [2022-11-02 20:36:57,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:57,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391572522] [2022-11-02 20:36:57,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:57,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:02,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:37:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:02,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:37:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:02,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:37:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:02,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:37:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:02,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:37:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:02,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:37:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:02,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:37:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:02,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-11-02 20:37:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:02,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-11-02 20:37:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:02,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-11-02 20:37:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:02,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-11-02 20:37:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:02,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-11-02 20:37:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:02,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-11-02 20:37:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:02,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-11-02 20:37:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:02,331 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-02 20:37:02,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:02,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391572522] [2022-11-02 20:37:02,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391572522] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:37:02,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408214257] [2022-11-02 20:37:02,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:02,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:37:02,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:37:02,335 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:37:02,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:37:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:05,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 7486 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:37:05,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-02 20:37:05,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:37:05,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408214257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:05,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:37:05,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:37:05,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255008317] [2022-11-02 20:37:05,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:05,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:37:05,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:05,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:37:05,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:37:05,431 INFO L87 Difference]: Start difference. First operand 989 states and 1461 transitions. Second operand has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:37:06,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:06,145 INFO L93 Difference]: Finished difference Result 3251 states and 4810 transitions. [2022-11-02 20:37:06,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:37:06,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 656 [2022-11-02 20:37:06,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:06,153 INFO L225 Difference]: With dead ends: 3251 [2022-11-02 20:37:06,154 INFO L226 Difference]: Without dead ends: 2280 [2022-11-02 20:37:06,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:37:06,156 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 3056 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3063 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:06,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3063 Valid, 2689 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:37:06,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2022-11-02 20:37:06,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 1021. [2022-11-02 20:37:06,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 1005 states have (on average 1.472636815920398) internal successors, (1480), 1005 states have internal predecessors, (1480), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-02 20:37:06,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1508 transitions. [2022-11-02 20:37:06,201 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1508 transitions. Word has length 656 [2022-11-02 20:37:06,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:06,201 INFO L495 AbstractCegarLoop]: Abstraction has 1021 states and 1508 transitions. [2022-11-02 20:37:06,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:37:06,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1508 transitions. [2022-11-02 20:37:06,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2022-11-02 20:37:06,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:06,208 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:06,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:37:06,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:37:06,431 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:06,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:06,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1641213869, now seen corresponding path program 1 times [2022-11-02 20:37:06,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:06,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312988784] [2022-11-02 20:37:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:06,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:12,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:37:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:12,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:37:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:12,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:37:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:12,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:37:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:12,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:37:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:12,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:37:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:12,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:37:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:12,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-11-02 20:37:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:12,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-11-02 20:37:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:12,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-11-02 20:37:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:12,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-11-02 20:37:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:12,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-11-02 20:37:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:12,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-11-02 20:37:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:12,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-11-02 20:37:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:12,222 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-02 20:37:12,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:12,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312988784] [2022-11-02 20:37:12,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312988784] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:37:12,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229938377] [2022-11-02 20:37:12,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:12,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:37:12,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:37:12,225 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:37:12,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:37:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:14,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 7485 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:37:14,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:15,348 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-02 20:37:15,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:37:15,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229938377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:15,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:37:15,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:37:15,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609693663] [2022-11-02 20:37:15,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:15,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:37:15,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:15,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:37:15,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:37:15,353 INFO L87 Difference]: Start difference. First operand 1021 states and 1508 transitions. Second operand has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:37:16,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:16,025 INFO L93 Difference]: Finished difference Result 3315 states and 4903 transitions. [2022-11-02 20:37:16,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:37:16,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 656 [2022-11-02 20:37:16,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:16,034 INFO L225 Difference]: With dead ends: 3315 [2022-11-02 20:37:16,034 INFO L226 Difference]: Without dead ends: 2312 [2022-11-02 20:37:16,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:37:16,038 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 3027 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3034 SdHoareTripleChecker+Valid, 2722 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:16,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3034 Valid, 2722 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:37:16,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2022-11-02 20:37:16,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 1053. [2022-11-02 20:37:16,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 1037 states have (on average 1.4725168756027) internal successors, (1527), 1037 states have internal predecessors, (1527), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-02 20:37:16,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1555 transitions. [2022-11-02 20:37:16,093 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1555 transitions. Word has length 656 [2022-11-02 20:37:16,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:16,094 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1555 transitions. [2022-11-02 20:37:16,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:37:16,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1555 transitions. [2022-11-02 20:37:16,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2022-11-02 20:37:16,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:16,101 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:16,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:37:16,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-02 20:37:16,322 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:16,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:16,322 INFO L85 PathProgramCache]: Analyzing trace with hash -980318895, now seen corresponding path program 1 times [2022-11-02 20:37:16,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:16,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477580910] [2022-11-02 20:37:16,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:16,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:21,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:37:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:21,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:37:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:21,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:37:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:21,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:37:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:21,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:37:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:21,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:37:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:21,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:37:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:21,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-11-02 20:37:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:21,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-11-02 20:37:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:21,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-11-02 20:37:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:21,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-11-02 20:37:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:21,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-11-02 20:37:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:21,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-11-02 20:37:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:21,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-11-02 20:37:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:21,428 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-02 20:37:21,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:21,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477580910] [2022-11-02 20:37:21,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477580910] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:37:21,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490005832] [2022-11-02 20:37:21,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:21,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:37:21,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:37:21,431 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:37:21,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:37:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:24,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 7484 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:37:24,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:24,690 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-02 20:37:24,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:37:24,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490005832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:24,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:37:24,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:37:24,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916087092] [2022-11-02 20:37:24,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:24,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:37:24,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:24,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:37:24,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:37:24,709 INFO L87 Difference]: Start difference. First operand 1053 states and 1555 transitions. Second operand has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:37:25,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:25,321 INFO L93 Difference]: Finished difference Result 3379 states and 4996 transitions. [2022-11-02 20:37:25,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:37:25,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 656 [2022-11-02 20:37:25,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:25,330 INFO L225 Difference]: With dead ends: 3379 [2022-11-02 20:37:25,330 INFO L226 Difference]: Without dead ends: 2344 [2022-11-02 20:37:25,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:37:25,333 INFO L413 NwaCegarLoop]: 945 mSDtfsCounter, 2986 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2993 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:25,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2993 Valid, 2769 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:37:25,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2022-11-02 20:37:25,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 1085. [2022-11-02 20:37:25,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 1069 states have (on average 1.4724041159962582) internal successors, (1574), 1069 states have internal predecessors, (1574), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-02 20:37:25,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1602 transitions. [2022-11-02 20:37:25,378 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1602 transitions. Word has length 656 [2022-11-02 20:37:25,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:25,379 INFO L495 AbstractCegarLoop]: Abstraction has 1085 states and 1602 transitions. [2022-11-02 20:37:25,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:37:25,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1602 transitions. [2022-11-02 20:37:25,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2022-11-02 20:37:25,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:25,386 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:25,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:37:25,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:37:25,611 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:25,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:25,612 INFO L85 PathProgramCache]: Analyzing trace with hash 194605647, now seen corresponding path program 1 times [2022-11-02 20:37:25,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:25,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887235348] [2022-11-02 20:37:25,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:25,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:30,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:37:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:30,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:37:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:30,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:37:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:30,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:37:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:30,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:37:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:30,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:37:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:30,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:37:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:30,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-11-02 20:37:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:30,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-11-02 20:37:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:30,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-11-02 20:37:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:30,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-11-02 20:37:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:30,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-11-02 20:37:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:30,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-11-02 20:37:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:30,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-11-02 20:37:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:30,591 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-02 20:37:30,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:30,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887235348] [2022-11-02 20:37:30,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887235348] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:37:30,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426444393] [2022-11-02 20:37:30,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:30,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:37:30,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:37:30,593 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:37:30,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:37:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:33,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 7483 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:37:33,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:34,023 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-02 20:37:34,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:37:34,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426444393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:34,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:37:34,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:37:34,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600267587] [2022-11-02 20:37:34,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:34,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:37:34,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:34,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:37:34,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:37:34,027 INFO L87 Difference]: Start difference. First operand 1085 states and 1602 transitions. Second operand has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:37:34,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:34,631 INFO L93 Difference]: Finished difference Result 3443 states and 5089 transitions. [2022-11-02 20:37:34,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:37:34,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 656 [2022-11-02 20:37:34,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:34,640 INFO L225 Difference]: With dead ends: 3443 [2022-11-02 20:37:34,641 INFO L226 Difference]: Without dead ends: 2376 [2022-11-02 20:37:34,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:37:34,644 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 2957 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2964 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:34,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2964 Valid, 2802 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:37:34,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2022-11-02 20:37:34,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1117. [2022-11-02 20:37:34,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1101 states have (on average 1.4722979109900092) internal successors, (1621), 1101 states have internal predecessors, (1621), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-02 20:37:34,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1649 transitions. [2022-11-02 20:37:34,693 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1649 transitions. Word has length 656 [2022-11-02 20:37:34,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:34,694 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1649 transitions. [2022-11-02 20:37:34,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:37:34,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1649 transitions. [2022-11-02 20:37:34,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2022-11-02 20:37:34,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:34,701 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:34,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:37:34,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:37:34,916 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:34,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:34,917 INFO L85 PathProgramCache]: Analyzing trace with hash 472176461, now seen corresponding path program 1 times [2022-11-02 20:37:34,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:34,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489528197] [2022-11-02 20:37:34,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:34,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:39,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:37:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:39,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:37:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:39,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:37:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:39,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:37:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:39,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:37:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:39,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:37:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:39,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:37:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:39,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-11-02 20:37:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:39,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-11-02 20:37:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:39,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-11-02 20:37:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:39,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-11-02 20:37:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:39,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-11-02 20:37:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:39,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-11-02 20:37:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:39,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-11-02 20:37:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:39,764 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-02 20:37:39,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:39,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489528197] [2022-11-02 20:37:39,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489528197] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:37:39,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231320860] [2022-11-02 20:37:39,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:39,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:37:39,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:37:39,766 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:37:39,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:37:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:42,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 7482 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:37:42,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-02 20:37:43,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:37:43,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231320860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:43,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:37:43,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:37:43,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848563885] [2022-11-02 20:37:43,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:43,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:37:43,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:43,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:37:43,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:37:43,293 INFO L87 Difference]: Start difference. First operand 1117 states and 1649 transitions. Second operand has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:37:43,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:43,937 INFO L93 Difference]: Finished difference Result 3507 states and 5182 transitions. [2022-11-02 20:37:43,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:37:43,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 656 [2022-11-02 20:37:43,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:43,952 INFO L225 Difference]: With dead ends: 3507 [2022-11-02 20:37:43,952 INFO L226 Difference]: Without dead ends: 2408 [2022-11-02 20:37:43,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:37:43,955 INFO L413 NwaCegarLoop]: 1021 mSDtfsCounter, 2922 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2929 SdHoareTripleChecker+Valid, 2841 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:43,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2929 Valid, 2841 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:37:43,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2022-11-02 20:37:44,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 1149. [2022-11-02 20:37:44,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 1133 states have (on average 1.472197705207414) internal successors, (1668), 1133 states have internal predecessors, (1668), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-02 20:37:44,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1696 transitions. [2022-11-02 20:37:44,011 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1696 transitions. Word has length 656 [2022-11-02 20:37:44,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:44,012 INFO L495 AbstractCegarLoop]: Abstraction has 1149 states and 1696 transitions. [2022-11-02 20:37:44,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:37:44,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1696 transitions. [2022-11-02 20:37:44,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2022-11-02 20:37:44,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:44,020 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:44,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:37:44,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 20:37:44,235 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:44,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:44,236 INFO L85 PathProgramCache]: Analyzing trace with hash 588493899, now seen corresponding path program 1 times [2022-11-02 20:37:44,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:44,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716779373] [2022-11-02 20:37:44,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:44,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:49,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:37:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:49,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:37:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:49,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:37:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:49,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:37:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:49,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:37:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:49,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:37:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:49,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:37:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:49,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-11-02 20:37:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:49,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-11-02 20:37:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:49,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-11-02 20:37:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:49,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-11-02 20:37:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:49,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-11-02 20:37:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:49,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-11-02 20:37:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:49,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-11-02 20:37:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-02 20:37:49,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:49,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716779373] [2022-11-02 20:37:49,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716779373] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:37:49,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617618873] [2022-11-02 20:37:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:49,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:37:49,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:37:49,170 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:37:49,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:37:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:52,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 7481 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:37:52,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-02 20:37:52,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:37:52,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617618873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:52,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:37:52,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:37:52,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812121669] [2022-11-02 20:37:52,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:52,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:37:52,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:52,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:37:52,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:37:52,810 INFO L87 Difference]: Start difference. First operand 1149 states and 1696 transitions. Second operand has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:37:53,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:53,435 INFO L93 Difference]: Finished difference Result 3571 states and 5275 transitions. [2022-11-02 20:37:53,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:37:53,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 656 [2022-11-02 20:37:53,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:53,444 INFO L225 Difference]: With dead ends: 3571 [2022-11-02 20:37:53,444 INFO L226 Difference]: Without dead ends: 2440 [2022-11-02 20:37:53,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:37:53,447 INFO L413 NwaCegarLoop]: 1061 mSDtfsCounter, 2887 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2894 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:53,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2894 Valid, 2881 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:37:53,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2022-11-02 20:37:53,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 1181. [2022-11-02 20:37:53,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 1165 states have (on average 1.4721030042918455) internal successors, (1715), 1165 states have internal predecessors, (1715), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-02 20:37:53,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1743 transitions. [2022-11-02 20:37:53,492 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1743 transitions. Word has length 656 [2022-11-02 20:37:53,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:53,493 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1743 transitions. [2022-11-02 20:37:53,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:37:53,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1743 transitions. [2022-11-02 20:37:53,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2022-11-02 20:37:53,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:53,499 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:53,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:37:53,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:37:53,723 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:53,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:53,724 INFO L85 PathProgramCache]: Analyzing trace with hash -867825335, now seen corresponding path program 1 times [2022-11-02 20:37:53,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:53,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235986672] [2022-11-02 20:37:53,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:53,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:58,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:37:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:58,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:37:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:58,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:37:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:58,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:37:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:58,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:37:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:58,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:37:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:58,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:37:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:58,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-11-02 20:37:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:58,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-11-02 20:37:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:58,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-11-02 20:37:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:58,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-11-02 20:37:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:58,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-11-02 20:37:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:58,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-11-02 20:37:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:58,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-11-02 20:37:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:58,720 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-02 20:37:58,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:58,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235986672] [2022-11-02 20:37:58,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235986672] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:37:58,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096166559] [2022-11-02 20:37:58,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:58,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:37:58,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:37:58,722 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:37:58,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:38:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:01,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 7480 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:38:01,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:02,358 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-02 20:38:02,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:38:02,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096166559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:02,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:38:02,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:38:02,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112467089] [2022-11-02 20:38:02,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:02,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:38:02,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:02,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:38:02,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:38:02,361 INFO L87 Difference]: Start difference. First operand 1181 states and 1743 transitions. Second operand has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:38:02,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:02,945 INFO L93 Difference]: Finished difference Result 3635 states and 5368 transitions. [2022-11-02 20:38:02,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:38:02,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 656 [2022-11-02 20:38:02,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:02,953 INFO L225 Difference]: With dead ends: 3635 [2022-11-02 20:38:02,953 INFO L226 Difference]: Without dead ends: 2472 [2022-11-02 20:38:02,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:38:02,956 INFO L413 NwaCegarLoop]: 1101 mSDtfsCounter, 2852 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2859 SdHoareTripleChecker+Valid, 2921 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:02,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2859 Valid, 2921 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:38:02,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-02 20:38:02,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1213. [2022-11-02 20:38:03,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 1197 states have (on average 1.4720133667502089) internal successors, (1762), 1197 states have internal predecessors, (1762), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-02 20:38:03,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1790 transitions. [2022-11-02 20:38:03,004 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1790 transitions. Word has length 656 [2022-11-02 20:38:03,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:03,005 INFO L495 AbstractCegarLoop]: Abstraction has 1213 states and 1790 transitions. [2022-11-02 20:38:03,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:38:03,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1790 transitions. [2022-11-02 20:38:03,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2022-11-02 20:38:03,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:03,012 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:03,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:03,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:03,239 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:03,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1134286407, now seen corresponding path program 1 times [2022-11-02 20:38:03,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:03,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403554551] [2022-11-02 20:38:03,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:03,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:08,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:38:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:08,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:38:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:08,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:38:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:08,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:38:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:08,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:38:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:08,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:38:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:08,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:38:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:08,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-11-02 20:38:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:08,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-11-02 20:38:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:08,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-11-02 20:38:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:08,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-11-02 20:38:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:08,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-11-02 20:38:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:08,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-11-02 20:38:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:08,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-11-02 20:38:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:08,045 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-02 20:38:08,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:08,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403554551] [2022-11-02 20:38:08,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403554551] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:08,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573939043] [2022-11-02 20:38:08,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:08,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:08,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:08,047 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:08,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:38:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:11,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 7479 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:38:11,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:11,732 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-02 20:38:11,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:38:11,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573939043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:11,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:38:11,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:38:11,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220526133] [2022-11-02 20:38:11,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:11,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:38:11,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:11,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:38:11,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:38:11,736 INFO L87 Difference]: Start difference. First operand 1213 states and 1790 transitions. Second operand has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:38:12,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:12,371 INFO L93 Difference]: Finished difference Result 3699 states and 5461 transitions. [2022-11-02 20:38:12,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:38:12,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 656 [2022-11-02 20:38:12,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:12,379 INFO L225 Difference]: With dead ends: 3699 [2022-11-02 20:38:12,380 INFO L226 Difference]: Without dead ends: 2504 [2022-11-02 20:38:12,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:38:12,383 INFO L413 NwaCegarLoop]: 1141 mSDtfsCounter, 2817 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2824 SdHoareTripleChecker+Valid, 2961 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:12,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2824 Valid, 2961 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:38:12,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2022-11-02 20:38:12,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 1245. [2022-11-02 20:38:12,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 1229 states have (on average 1.4719283970707893) internal successors, (1809), 1229 states have internal predecessors, (1809), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-02 20:38:12,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1837 transitions. [2022-11-02 20:38:12,432 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1837 transitions. Word has length 656 [2022-11-02 20:38:12,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:12,433 INFO L495 AbstractCegarLoop]: Abstraction has 1245 states and 1837 transitions. [2022-11-02 20:38:12,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:38:12,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1837 transitions. [2022-11-02 20:38:12,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2022-11-02 20:38:12,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:12,440 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:12,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:12,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 20:38:12,664 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:12,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:12,664 INFO L85 PathProgramCache]: Analyzing trace with hash 888478533, now seen corresponding path program 1 times [2022-11-02 20:38:12,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:12,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677582940] [2022-11-02 20:38:12,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:12,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:17,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:38:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:17,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:38:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:17,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:38:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:17,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:38:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:17,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:38:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:17,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:38:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:17,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:38:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:17,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-11-02 20:38:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:17,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-11-02 20:38:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:17,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-11-02 20:38:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:17,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-11-02 20:38:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:17,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-11-02 20:38:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:17,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-11-02 20:38:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:17,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-11-02 20:38:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:17,131 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-02 20:38:17,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:17,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677582940] [2022-11-02 20:38:17,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677582940] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:17,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7079819] [2022-11-02 20:38:17,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:17,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:17,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:17,140 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:17,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:38:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:20,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 7478 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:38:20,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:21,020 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-02 20:38:21,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:38:21,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7079819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:21,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:38:21,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:38:21,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291008691] [2022-11-02 20:38:21,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:21,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:38:21,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:21,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:38:21,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:38:21,023 INFO L87 Difference]: Start difference. First operand 1245 states and 1837 transitions. Second operand has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:38:21,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:21,680 INFO L93 Difference]: Finished difference Result 3749 states and 5533 transitions. [2022-11-02 20:38:21,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:38:21,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 656 [2022-11-02 20:38:21,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:21,688 INFO L225 Difference]: With dead ends: 3749 [2022-11-02 20:38:21,688 INFO L226 Difference]: Without dead ends: 2522 [2022-11-02 20:38:21,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:38:21,690 INFO L413 NwaCegarLoop]: 1162 mSDtfsCounter, 2796 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2803 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:21,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2803 Valid, 2982 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:38:21,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2022-11-02 20:38:21,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 1263. [2022-11-02 20:38:21,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1247 states have (on average 1.471531676022454) internal successors, (1835), 1247 states have internal predecessors, (1835), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-02 20:38:21,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1863 transitions. [2022-11-02 20:38:21,738 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1863 transitions. Word has length 656 [2022-11-02 20:38:21,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:21,739 INFO L495 AbstractCegarLoop]: Abstraction has 1263 states and 1863 transitions. [2022-11-02 20:38:21,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:38:21,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1863 transitions. [2022-11-02 20:38:21,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2022-11-02 20:38:21,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:21,746 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:21,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:21,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df2db74-fda8-4786-8ccc-f14bfd23d56b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:38:21,967 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:21,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:21,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1125366845, now seen corresponding path program 1 times [2022-11-02 20:38:21,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:21,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699748845] [2022-11-02 20:38:21,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:21,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat