./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal15.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal15.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e7e2ff18c533976cc622ae43641cf88155866b5f7bc9850cf6ce8f31b09e9cee --- 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 [2022-11-03 02:43:39,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:43:39,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:43:39,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:43:39,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:43:39,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:43:39,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:43:39,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:43:39,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:43:39,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:43:39,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:43:39,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:43:39,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:43:39,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:43:39,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:43:39,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:43:39,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:43:39,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:43:39,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:43:39,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:43:39,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:43:39,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:43:39,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:43:39,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:43:39,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:43:39,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:43:39,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:43:39,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:43:39,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:43:39,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:43:39,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:43:39,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:43:39,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:43:39,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:43:39,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:43:39,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:43:39,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:43:39,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:43:39,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:43:39,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:43:39,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:43:39,704 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:43:39,751 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:43:39,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:43:39,753 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:43:39,753 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:43:39,754 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:43:39,754 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:43:39,754 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:43:39,755 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:43:39,755 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:43:39,755 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:43:39,756 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:43:39,757 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:43:39,757 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:43:39,757 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:43:39,757 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:43:39,758 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:43:39,758 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:43:39,758 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:43:39,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:43:39,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:43:39,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:43:39,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:43:39,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:43:39,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:43:39,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:43:39,761 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:43:39,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:43:39,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:43:39,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:43:39,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:43:39,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:43:39,763 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:43:39,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:43:39,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:43:39,764 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:43:39,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:43:39,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:43:39,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:43:39,765 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_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7e2ff18c533976cc622ae43641cf88155866b5f7bc9850cf6ce8f31b09e9cee [2022-11-03 02:43:40,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:43:40,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:43:40,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:43:40,132 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:43:40,133 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:43:40,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal15.c [2022-11-03 02:43:40,219 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/data/d5e0fcd86/7343cb5d0f914cd8982fc57d64143878/FLAGa90771e36 [2022-11-03 02:43:40,935 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:43:40,936 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal15.c [2022-11-03 02:43:40,964 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/data/d5e0fcd86/7343cb5d0f914cd8982fc57d64143878/FLAGa90771e36 [2022-11-03 02:43:41,224 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/data/d5e0fcd86/7343cb5d0f914cd8982fc57d64143878 [2022-11-03 02:43:41,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:43:41,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:43:41,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:43:41,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:43:41,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:43:41,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:43:41" (1/1) ... [2022-11-03 02:43:41,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f3a5d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:41, skipping insertion in model container [2022-11-03 02:43:41,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:43:41" (1/1) ... [2022-11-03 02:43:41,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:43:41,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:43:41,547 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_032a8deb-8c24-4574-97b0-25df4a45f9d0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal15.c[1107,1120] [2022-11-03 02:43:41,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:43:41,920 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:43:41,934 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_032a8deb-8c24-4574-97b0-25df4a45f9d0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal15.c[1107,1120] [2022-11-03 02:43:42,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:43:42,172 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:43:42,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:42 WrapperNode [2022-11-03 02:43:42,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:43:42,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:43:42,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:43:42,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:43:42,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:42" (1/1) ... [2022-11-03 02:43:42,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:42" (1/1) ... [2022-11-03 02:43:42,411 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1934 [2022-11-03 02:43:42,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:43:42,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:43:42,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:43:42,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:43:42,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:42" (1/1) ... [2022-11-03 02:43:42,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:42" (1/1) ... [2022-11-03 02:43:42,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:42" (1/1) ... [2022-11-03 02:43:42,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:42" (1/1) ... [2022-11-03 02:43:42,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:42" (1/1) ... [2022-11-03 02:43:42,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:42" (1/1) ... [2022-11-03 02:43:42,531 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:42" (1/1) ... [2022-11-03 02:43:42,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:42" (1/1) ... [2022-11-03 02:43:42,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:43:42,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:43:42,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:43:42,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:43:42,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:42" (1/1) ... [2022-11-03 02:43:42,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:43:42,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:43:42,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:43:42,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:43:42,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:43:42,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:43:43,213 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:43:43,216 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:43:49,032 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:43:55,977 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:43:55,977 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:43:55,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:43:55 BoogieIcfgContainer [2022-11-03 02:43:55,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:43:55,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:43:55,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:43:55,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:43:55,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:43:41" (1/3) ... [2022-11-03 02:43:55,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49573fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:43:55, skipping insertion in model container [2022-11-03 02:43:55,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:42" (2/3) ... [2022-11-03 02:43:55,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49573fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:43:55, skipping insertion in model container [2022-11-03 02:43:55,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:43:55" (3/3) ... [2022-11-03 02:43:55,991 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal15.c [2022-11-03 02:43:56,010 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:43:56,011 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:43:56,078 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:43:56,096 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=FINITE_AUTOMATA, 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;@2f6d29f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:43:56,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:43:56,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:43:56,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 02:43:56,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:43:56,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 02:43:56,108 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:43:56,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:43:56,113 INFO L85 PathProgramCache]: Analyzing trace with hash 26070058, now seen corresponding path program 1 times [2022-11-03 02:43:56,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:43:56,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13111252] [2022-11-03 02:43:56,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:43:56,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:45:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:45:03,304 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:46:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:46:10,023 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:46:10,025 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:46:10,026 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:46:10,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:46:10,034 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 02:46:10,040 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:46:10,119 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:46:10,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:46:10 BoogieIcfgContainer [2022-11-03 02:46:10,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:46:10,189 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:46:10,190 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:46:10,190 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:46:10,191 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:43:55" (3/4) ... [2022-11-03 02:46:10,194 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 02:46:10,194 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:46:10,196 INFO L158 Benchmark]: Toolchain (without parser) took 148966.44ms. Allocated memory was 94.4MB in the beginning and 4.1GB in the end (delta: 4.0GB). Free memory was 58.5MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 2.2GB. Max. memory is 16.1GB. [2022-11-03 02:46:10,196 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory was 47.1MB in the beginning and 47.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:46:10,197 INFO L158 Benchmark]: CACSL2BoogieTranslator took 943.17ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 58.4MB in the beginning and 70.2MB in the end (delta: -11.8MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2022-11-03 02:46:10,198 INFO L158 Benchmark]: Boogie Procedure Inliner took 237.31ms. Allocated memory is still 113.2MB. Free memory was 70.2MB in the beginning and 61.3MB in the end (delta: 8.9MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB. [2022-11-03 02:46:10,199 INFO L158 Benchmark]: Boogie Preprocessor took 176.97ms. Allocated memory is still 113.2MB. Free memory was 61.3MB in the beginning and 46.3MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-03 02:46:10,199 INFO L158 Benchmark]: RCFGBuilder took 13390.04ms. Allocated memory was 113.2MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 46.3MB in the beginning and 1.1GB in the end (delta: -1.1GB). Peak memory consumption was 692.3MB. Max. memory is 16.1GB. [2022-11-03 02:46:10,200 INFO L158 Benchmark]: TraceAbstraction took 134206.35ms. Allocated memory was 1.7GB in the beginning and 4.1GB in the end (delta: 2.5GB). Free memory was 1.1GB in the beginning and 1.9GB in the end (delta: -731.6MB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2022-11-03 02:46:10,201 INFO L158 Benchmark]: Witness Printer took 4.84ms. Allocated memory is still 4.1GB. Free memory is still 1.9GB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:46:10,204 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory was 47.1MB in the beginning and 47.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 943.17ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 58.4MB in the beginning and 70.2MB in the end (delta: -11.8MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 237.31ms. Allocated memory is still 113.2MB. Free memory was 70.2MB in the beginning and 61.3MB in the end (delta: 8.9MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 176.97ms. Allocated memory is still 113.2MB. Free memory was 61.3MB in the beginning and 46.3MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * RCFGBuilder took 13390.04ms. Allocated memory was 113.2MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 46.3MB in the beginning and 1.1GB in the end (delta: -1.1GB). Peak memory consumption was 692.3MB. Max. memory is 16.1GB. * TraceAbstraction took 134206.35ms. Allocated memory was 1.7GB in the beginning and 4.1GB in the end (delta: 2.5GB). Free memory was 1.1GB in the beginning and 1.9GB in the end (delta: -731.6MB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. * Witness Printer took 4.84ms. Allocated memory is still 4.1GB. Free memory is still 1.9GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 195, overapproximation of bitwiseAnd at line 160, overapproximation of bitwiseComplement at line 192, overapproximation of bitwiseXOr at line 198. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_6 mask_SORT_6 = (SORT_6)-1 >> (sizeof(SORT_6) * 8 - 2); [L29] const SORT_6 msb_SORT_6 = (SORT_6)1 << (2 - 1); [L31] const SORT_8 mask_SORT_8 = (SORT_8)-1 >> (sizeof(SORT_8) * 8 - 3); [L32] const SORT_8 msb_SORT_8 = (SORT_8)1 << (3 - 1); [L34] const SORT_14 mask_SORT_14 = (SORT_14)-1 >> (sizeof(SORT_14) * 8 - 5); [L35] const SORT_14 msb_SORT_14 = (SORT_14)1 << (5 - 1); [L37] const SORT_17 mask_SORT_17 = (SORT_17)-1 >> (sizeof(SORT_17) * 8 - 8); [L38] const SORT_17 msb_SORT_17 = (SORT_17)1 << (8 - 1); [L40] const SORT_107 mask_SORT_107 = (SORT_107)-1 >> (sizeof(SORT_107) * 8 - 4); [L41] const SORT_107 msb_SORT_107 = (SORT_107)1 << (4 - 1); [L43] const SORT_147 mask_SORT_147 = (SORT_147)-1 >> (sizeof(SORT_147) * 8 - 6); [L44] const SORT_147 msb_SORT_147 = (SORT_147)1 << (6 - 1); [L46] const SORT_149 mask_SORT_149 = (SORT_149)-1 >> (sizeof(SORT_149) * 8 - 7); [L47] const SORT_149 msb_SORT_149 = (SORT_149)1 << (7 - 1); [L49] const SORT_152 mask_SORT_152 = (SORT_152)-1 >> (sizeof(SORT_152) * 8 - 9); [L50] const SORT_152 msb_SORT_152 = (SORT_152)1 << (9 - 1); [L52] const SORT_154 mask_SORT_154 = (SORT_154)-1 >> (sizeof(SORT_154) * 8 - 10); [L53] const SORT_154 msb_SORT_154 = (SORT_154)1 << (10 - 1); [L55] const SORT_156 mask_SORT_156 = (SORT_156)-1 >> (sizeof(SORT_156) * 8 - 11); [L56] const SORT_156 msb_SORT_156 = (SORT_156)1 << (11 - 1); [L58] const SORT_158 mask_SORT_158 = (SORT_158)-1 >> (sizeof(SORT_158) * 8 - 12); [L59] const SORT_158 msb_SORT_158 = (SORT_158)1 << (12 - 1); [L61] const SORT_1 var_28 = 0; [L62] const SORT_17 var_33 = 0; [L63] const SORT_6 var_39 = 0; [L64] const SORT_1 var_47 = 1; [L65] const SORT_8 var_48 = 1; [L66] const SORT_8 var_51 = 3; [L67] const SORT_8 var_54 = 2; [L68] const SORT_8 var_58 = 5; [L69] const SORT_8 var_61 = 7; [L70] const SORT_8 var_64 = 6; [L71] const SORT_8 var_68 = 4; [L72] const SORT_6 var_74 = 2; [L73] const SORT_6 var_76 = 1; [L74] const SORT_6 var_86 = 3; [L75] const SORT_14 var_97 = 11; [L76] const SORT_14 var_99 = 10; [L77] const SORT_14 var_101 = 2; [L78] const SORT_14 var_103 = 9; [L79] const SORT_14 var_119 = 21; [L80] const SORT_14 var_121 = 20; [L81] const SORT_14 var_123 = 19; [L82] const SORT_14 var_125 = 18; [L83] const SORT_14 var_127 = 17; [L84] const SORT_14 var_129 = 16; [L85] const SORT_14 var_131 = 15; [L86] const SORT_14 var_133 = 14; [L87] const SORT_14 var_135 = 8; [L88] const SORT_14 var_137 = 6; [L89] const SORT_14 var_139 = 3; [L90] const SORT_14 var_141 = 5; [L91] const SORT_14 var_161 = 4; [L92] const SORT_14 var_163 = 1; [L93] const SORT_14 var_173 = 7; [L94] const SORT_14 var_191 = 13; [L95] const SORT_14 var_199 = 12; [L96] const SORT_14 var_220 = 23; [L97] const SORT_14 var_223 = 22; [L98] const SORT_14 var_232 = 25; [L99] const SORT_14 var_235 = 27; [L100] const SORT_14 var_238 = 26; [L101] const SORT_14 var_242 = 29; [L102] const SORT_14 var_245 = 31; [L103] const SORT_14 var_248 = 30; [L104] const SORT_14 var_252 = 28; [L105] const SORT_14 var_258 = 24; [L106] const SORT_147 var_281 = 0; [L107] const SORT_17 var_415 = 3; [L109] SORT_1 input_2; [L110] SORT_1 input_3; [L111] SORT_1 input_4; [L112] SORT_1 input_5; [L113] SORT_6 input_7; [L114] SORT_8 input_9; [L115] SORT_6 input_10; [L116] SORT_1 input_11; [L117] SORT_1 input_12; [L118] SORT_1 input_13; [L119] SORT_14 input_15; [L120] SORT_6 input_16; [L121] SORT_17 input_18; [L122] SORT_6 input_19; [L123] SORT_1 input_20; [L124] SORT_1 input_21; [L125] SORT_6 input_22; [L126] SORT_6 input_23; [L127] SORT_17 input_24; [L128] SORT_17 input_25; [L129] SORT_1 input_26; [L130] SORT_6 input_27; [L132] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L133] SORT_17 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_17; [L134] SORT_1 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L135] SORT_6 state_40 = __VERIFIER_nondet_uchar() & mask_SORT_6; [L136] SORT_6 state_322 = __VERIFIER_nondet_uchar() & mask_SORT_6; [L137] SORT_1 state_355 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L138] SORT_17 state_369 = __VERIFIER_nondet_uchar() & mask_SORT_17; [L139] SORT_6 state_375 = __VERIFIER_nondet_uchar() & mask_SORT_6; [L141] SORT_1 init_30_arg_1 = var_28; [L142] state_29 = init_30_arg_1 [L143] SORT_17 init_35_arg_1 = var_33; [L144] state_34 = init_35_arg_1 [L145] SORT_1 init_37_arg_1 = var_28; [L146] state_36 = init_37_arg_1 [L147] SORT_6 init_41_arg_1 = var_39; [L148] state_40 = init_41_arg_1 [L149] SORT_6 init_323_arg_1 = var_39; [L150] state_322 = init_323_arg_1 [L151] SORT_1 init_356_arg_1 = var_28; [L152] state_355 = init_356_arg_1 [L153] SORT_17 init_370_arg_1 = var_33; [L154] state_369 = init_370_arg_1 [L155] SORT_6 init_376_arg_1 = var_39; [L156] state_375 = init_376_arg_1 VAL [init_30_arg_1=0, init_323_arg_1=0, init_356_arg_1=0, init_35_arg_1=0, init_370_arg_1=0, init_376_arg_1=0, init_37_arg_1=0, init_41_arg_1=0, mask_SORT_1=1, mask_SORT_107=15, mask_SORT_14=31, mask_SORT_147=63, mask_SORT_149=127, mask_SORT_152=511, mask_SORT_154=1023, mask_SORT_156=2047, mask_SORT_158=4095, mask_SORT_17=255, mask_SORT_6=3, mask_SORT_8=7, msb_SORT_1=1, msb_SORT_107=8, msb_SORT_14=16, msb_SORT_147=32, msb_SORT_149=64, msb_SORT_152=256, msb_SORT_154=512, msb_SORT_156=1024, msb_SORT_158=2048, msb_SORT_17=128, msb_SORT_6=2, msb_SORT_8=4, state_29=0, state_322=0, state_34=0, state_355=0, state_36=0, state_369=0, state_375=0, state_40=0, var_101=2, var_103=9, var_119=21, var_121=20, var_123=19, var_125=18, var_127=17, var_129=16, var_131=15, var_133=14, var_135=8, var_137=6, var_139=3, var_141=5, var_161=4, var_163=1, var_173=7, var_191=13, var_199=12, var_220=23, var_223=22, var_232=25, var_235=27, var_238=26, var_242=29, var_245=31, var_248=30, var_252=28, var_258=24, var_28=0, var_281=0, var_33=0, var_39=0, var_415=3, var_47=1, var_48=1, var_51=3, var_54=2, var_58=5, var_61=7, var_64=6, var_68=4, var_74=2, var_76=1, var_86=3, var_97=11, var_99=10] [L159] input_2 = __VERIFIER_nondet_uchar() [L160] input_2 = input_2 & mask_SORT_1 [L161] input_3 = __VERIFIER_nondet_uchar() [L162] input_3 = input_3 & mask_SORT_1 [L163] input_4 = __VERIFIER_nondet_uchar() [L164] input_5 = __VERIFIER_nondet_uchar() [L165] input_5 = input_5 & mask_SORT_1 [L166] input_7 = __VERIFIER_nondet_uchar() [L167] input_7 = input_7 & mask_SORT_6 [L168] input_9 = __VERIFIER_nondet_uchar() [L169] input_9 = input_9 & mask_SORT_8 [L170] input_10 = __VERIFIER_nondet_uchar() [L171] input_10 = input_10 & mask_SORT_6 [L172] input_11 = __VERIFIER_nondet_uchar() [L173] input_11 = input_11 & mask_SORT_1 [L174] input_12 = __VERIFIER_nondet_uchar() [L175] input_13 = __VERIFIER_nondet_uchar() [L176] input_15 = __VERIFIER_nondet_uchar() [L177] input_15 = input_15 & mask_SORT_14 [L178] input_16 = __VERIFIER_nondet_uchar() [L179] input_18 = __VERIFIER_nondet_uchar() [L180] input_19 = __VERIFIER_nondet_uchar() [L181] input_20 = __VERIFIER_nondet_uchar() [L182] input_21 = __VERIFIER_nondet_uchar() [L183] input_22 = __VERIFIER_nondet_uchar() [L184] input_23 = __VERIFIER_nondet_uchar() [L185] input_24 = __VERIFIER_nondet_uchar() [L186] input_25 = __VERIFIER_nondet_uchar() [L187] input_26 = __VERIFIER_nondet_uchar() [L188] input_27 = __VERIFIER_nondet_uchar() [L191] SORT_1 var_31_arg_0 = state_29; [L192] SORT_1 var_31 = ~var_31_arg_0; [L193] SORT_1 var_83_arg_0 = input_12; [L194] SORT_1 var_83_arg_1 = input_11; [L195] SORT_6 var_83 = ((SORT_6)var_83_arg_0 << 1) | var_83_arg_1; [L196] var_83 = var_83 & mask_SORT_6 [L197] SORT_6 var_84_arg_0 = var_83; [L198] var_84_arg_0 ^= var_84_arg_0 >> 4 [L199] var_84_arg_0 ^= var_84_arg_0 >> 2 [L200] var_84_arg_0 ^= var_84_arg_0 >> 1 [L201] SORT_1 var_84 = var_84_arg_0; [L202] SORT_8 var_289_arg_0 = input_9; [L203] SORT_8 var_289_arg_1 = var_54; [L204] SORT_1 var_289 = var_289_arg_0 == var_289_arg_1; [L205] SORT_8 var_288_arg_0 = input_9; [L206] SORT_8 var_288_arg_1 = var_48; [L207] SORT_1 var_288 = var_288_arg_0 == var_288_arg_1; [L208] SORT_8 var_287_arg_0 = input_9; [L209] SORT_8 var_287_arg_1 = var_68; [L210] SORT_1 var_287 = var_287_arg_0 == var_287_arg_1; [L211] SORT_8 var_286_arg_0 = input_9; [L212] SORT_8 var_286_arg_1 = var_58; [L213] SORT_1 var_286 = var_286_arg_0 == var_286_arg_1; [L214] SORT_1 var_290_arg_0 = var_287; [L215] SORT_1 var_290_arg_1 = var_286; [L216] SORT_6 var_290 = ((SORT_6)var_290_arg_0 << 1) | var_290_arg_1; [L217] var_290 = var_290 & mask_SORT_6 [L218] SORT_1 var_291_arg_0 = var_288; [L219] SORT_6 var_291_arg_1 = var_290; [L220] SORT_8 var_291 = ((SORT_8)var_291_arg_0 << 2) | var_291_arg_1; [L221] var_291 = var_291 & mask_SORT_8 [L222] SORT_1 var_292_arg_0 = var_289; [L223] SORT_8 var_292_arg_1 = var_291; [L224] SORT_107 var_292 = ((SORT_107)var_292_arg_0 << 3) | var_292_arg_1; [L225] var_292 = var_292 & mask_SORT_107 [L226] SORT_107 var_293_arg_0 = var_292; [L227] SORT_1 var_293 = var_293_arg_0 != 0; [L228] SORT_6 var_77_arg_0 = input_10; [L229] SORT_6 var_77_arg_1 = var_76; [L230] SORT_1 var_77 = var_77_arg_0 == var_77_arg_1; [L231] SORT_8 var_65_arg_0 = input_9; [L232] SORT_8 var_65_arg_1 = var_64; [L233] SORT_1 var_65 = var_65_arg_0 == var_65_arg_1; [L234] SORT_8 var_62_arg_0 = input_9; [L235] SORT_8 var_62_arg_1 = var_61; [L236] SORT_1 var_62 = var_62_arg_0 == var_62_arg_1; [L237] SORT_1 var_66_arg_0 = var_65; [L238] SORT_1 var_66_arg_1 = var_62; [L239] SORT_1 var_66 = var_66_arg_0 | var_66_arg_1; [L240] var_66 = var_66 & mask_SORT_1 [L241] SORT_8 var_59_arg_0 = input_9; [L242] SORT_8 var_59_arg_1 = var_58; [L243] SORT_1 var_59 = var_59_arg_0 == var_59_arg_1; [L244] SORT_8 var_69_arg_0 = input_9; [L245] SORT_8 var_69_arg_1 = var_68; [L246] SORT_1 var_69 = var_69_arg_0 == var_69_arg_1; [L247] SORT_1 var_70_arg_0 = var_59; [L248] SORT_1 var_70_arg_1 = var_69; [L249] SORT_6 var_70 = ((SORT_6)var_70_arg_0 << 1) | var_70_arg_1; [L250] var_70 = var_70 & mask_SORT_6 [L251] SORT_1 var_71_arg_0 = var_66; [L252] SORT_6 var_71_arg_1 = var_70; [L253] SORT_8 var_71 = ((SORT_8)var_71_arg_0 << 2) | var_71_arg_1; [L254] var_71 = var_71 & mask_SORT_8 [L255] SORT_8 var_72_arg_0 = var_71; [L256] SORT_1 var_72 = var_72_arg_0 != 0; [L257] SORT_1 var_63_arg_0 = var_62; [L258] SORT_1 var_63_arg_1 = var_47; [L259] SORT_1 var_63_arg_2 = var_47; [L260] EXPR var_63_arg_0 ? var_63_arg_1 : var_63_arg_2 [L260] SORT_1 var_63 = var_63_arg_0 ? var_63_arg_1 : var_63_arg_2; [L261] SORT_1 var_60_arg_0 = var_59; [L262] SORT_1 var_60_arg_1 = var_28; [L263] SORT_1 var_60_arg_2 = var_28; [L264] EXPR var_60_arg_0 ? var_60_arg_1 : var_60_arg_2 [L264] SORT_1 var_60 = var_60_arg_0 ? var_60_arg_1 : var_60_arg_2; [L265] SORT_1 var_67_arg_0 = var_66; [L266] SORT_1 var_67_arg_1 = var_63; [L267] SORT_1 var_67_arg_2 = var_60; [L268] EXPR var_67_arg_0 ? var_67_arg_1 : var_67_arg_2 [L268] SORT_1 var_67 = var_67_arg_0 ? var_67_arg_1 : var_67_arg_2; [L269] SORT_8 var_55_arg_0 = input_9; [L270] SORT_8 var_55_arg_1 = var_54; [L271] SORT_1 var_55 = var_55_arg_0 == var_55_arg_1; [L272] SORT_8 var_52_arg_0 = input_9; [L273] SORT_8 var_52_arg_1 = var_51; [L274] SORT_1 var_52 = var_52_arg_0 == var_52_arg_1; [L275] SORT_1 var_56_arg_0 = var_55; [L276] SORT_1 var_56_arg_1 = var_52; [L277] SORT_1 var_56 = var_56_arg_0 | var_56_arg_1; [L278] var_56 = var_56 & mask_SORT_1 [L279] SORT_1 var_53_arg_0 = var_52; [L280] SORT_1 var_53_arg_1 = var_47; [L281] SORT_1 var_53_arg_2 = var_28; [L282] EXPR var_53_arg_0 ? var_53_arg_1 : var_53_arg_2 [L282] SORT_1 var_53 = var_53_arg_0 ? var_53_arg_1 : var_53_arg_2; [L283] SORT_8 var_49_arg_0 = input_9; [L284] SORT_8 var_49_arg_1 = var_48; [L285] SORT_1 var_49 = var_49_arg_0 == var_49_arg_1; [L286] SORT_1 var_50_arg_0 = var_49; [L287] SORT_1 var_50_arg_1 = var_28; [L288] SORT_1 var_50_arg_2 = var_47; [L289] EXPR var_50_arg_0 ? var_50_arg_1 : var_50_arg_2 [L289] SORT_1 var_50 = var_50_arg_0 ? var_50_arg_1 : var_50_arg_2; [L290] SORT_1 var_57_arg_0 = var_56; [L291] SORT_1 var_57_arg_1 = var_53; [L292] SORT_1 var_57_arg_2 = var_50; [L293] EXPR var_57_arg_0 ? var_57_arg_1 : var_57_arg_2 [L293] SORT_1 var_57 = var_57_arg_0 ? var_57_arg_1 : var_57_arg_2; [L294] SORT_1 var_73_arg_0 = var_72; [L295] SORT_1 var_73_arg_1 = var_67; [L296] SORT_1 var_73_arg_2 = var_57; [L297] EXPR var_73_arg_0 ? var_73_arg_1 : var_73_arg_2 [L297] SORT_1 var_73 = var_73_arg_0 ? var_73_arg_1 : var_73_arg_2; [L298] var_73 = var_73 & mask_SORT_1 [L299] SORT_6 var_75_arg_0 = input_10; [L300] SORT_6 var_75_arg_1 = var_74; [L301] SORT_1 var_75 = var_75_arg_0 == var_75_arg_1; [L302] SORT_1 var_283_arg_0 = var_77; [L303] SORT_1 var_283_arg_1 = var_75; [L304] SORT_6 var_283 = ((SORT_6)var_283_arg_0 << 1) | var_283_arg_1; [L305] var_283 = var_283 & mask_SORT_6 [L306] SORT_6 var_284_arg_0 = var_283; [L307] SORT_1 var_284 = var_284_arg_0 != 0; [L308] SORT_1 var_285_arg_0 = var_73; [L309] SORT_1 var_285_arg_1 = var_284; [L310] SORT_1 var_285_arg_2 = var_28; [L311] EXPR var_285_arg_0 ? var_285_arg_1 : var_285_arg_2 [L311] SORT_1 var_285 = var_285_arg_0 ? var_285_arg_1 : var_285_arg_2; [L312] SORT_1 var_294_arg_0 = var_293; [L313] SORT_1 var_294_arg_1 = var_77; [L314] SORT_1 var_294_arg_2 = var_285; [L315] EXPR var_294_arg_0 ? var_294_arg_1 : var_294_arg_2 [L315] SORT_1 var_294 = var_294_arg_0 ? var_294_arg_1 : var_294_arg_2; [L316] SORT_6 var_87_arg_0 = input_7; [L317] SORT_6 var_87_arg_1 = var_86; [L318] SORT_1 var_87 = var_87_arg_0 == var_87_arg_1; [L319] SORT_1 var_295_arg_0 = var_294; [L320] SORT_1 var_295_arg_1 = var_87; [L321] SORT_6 var_295 = ((SORT_6)var_295_arg_0 << 1) | var_295_arg_1; [L322] var_295 = var_295 & mask_SORT_6 [L323] SORT_1 var_296_arg_0 = var_84; [L324] SORT_6 var_296_arg_1 = var_295; [L325] SORT_8 var_296 = ((SORT_8)var_296_arg_0 << 2) | var_296_arg_1; [L326] var_296 = var_296 & mask_SORT_8 [L327] SORT_8 var_297_arg_0 = var_296; [L328] SORT_1 var_297 = var_297_arg_0 != 0; [L329] SORT_1 var_298_arg_0 = input_13; [L330] SORT_1 var_298_arg_1 = var_297; [L331] SORT_6 var_298 = ((SORT_6)var_298_arg_0 << 1) | var_298_arg_1; [L332] var_298 = var_298 & mask_SORT_6 [L333] SORT_6 var_299_arg_0 = var_298; [L334] SORT_1 var_299 = var_299_arg_0 == mask_SORT_6; [L335] SORT_1 var_42_arg_0 = state_36; [L336] SORT_6 var_42_arg_1 = state_40; [L337] SORT_6 var_42_arg_2 = input_19; [L338] EXPR var_42_arg_0 ? var_42_arg_1 : var_42_arg_2 [L338] SORT_6 var_42 = var_42_arg_0 ? var_42_arg_1 : var_42_arg_2; [L339] SORT_6 var_45_arg_0 = var_42; [L340] SORT_1 var_45 = var_45_arg_0 >> 0; [L341] var_45 = var_45 & mask_SORT_1 [L342] SORT_6 var_43_arg_0 = var_42; [L343] SORT_1 var_43 = var_43_arg_0 >> 1; [L344] var_43 = var_43 & mask_SORT_1 [L345] SORT_1 var_357_arg_0 = state_36; [L346] SORT_1 var_357_arg_1 = state_355; [L347] SORT_1 var_357_arg_2 = input_20; [L348] EXPR var_357_arg_0 ? var_357_arg_1 : var_357_arg_2 [L348] SORT_1 var_357 = var_357_arg_0 ? var_357_arg_1 : var_357_arg_2; [L349] SORT_1 var_358_arg_0 = var_43; [L350] SORT_1 var_358_arg_1 = var_357; [L351] SORT_1 var_358_arg_2 = var_28; [L352] EXPR var_358_arg_0 ? var_358_arg_1 : var_358_arg_2 [L352] SORT_1 var_358 = var_358_arg_0 ? var_358_arg_1 : var_358_arg_2; [L353] SORT_1 var_359_arg_0 = var_45; [L354] SORT_1 var_359_arg_1 = var_28; [L355] SORT_1 var_359_arg_2 = var_358; [L356] EXPR var_359_arg_0 ? var_359_arg_1 : var_359_arg_2 [L356] SORT_1 var_359 = var_359_arg_0 ? var_359_arg_1 : var_359_arg_2; [L357] var_359 = var_359 & mask_SORT_1 [L358] SORT_1 var_360_arg_0 = var_299; [L359] SORT_1 var_360_arg_1 = var_359; [L360] SORT_6 var_360 = ((SORT_6)var_360_arg_0 << 1) | var_360_arg_1; [L361] var_360 = var_360 & mask_SORT_6 [L362] SORT_6 var_361_arg_0 = var_360; [L363] SORT_1 var_361 = var_361_arg_0 != 0; [L364] SORT_1 var_364_arg_0 = var_361; [L365] SORT_1 var_364 = ~var_364_arg_0; [L366] var_364 = var_364 & mask_SORT_1 [L367] SORT_14 var_249_arg_0 = input_15; [L368] SORT_14 var_249_arg_1 = var_248; [L369] SORT_1 var_249 = var_249_arg_0 == var_249_arg_1; [L370] SORT_14 var_246_arg_0 = input_15; [L371] SORT_14 var_246_arg_1 = var_245; [L372] SORT_1 var_246 = var_246_arg_0 == var_246_arg_1; [L373] SORT_1 var_250_arg_0 = var_249; [L374] SORT_1 var_250_arg_1 = var_246; [L375] SORT_1 var_250 = var_250_arg_0 | var_250_arg_1; [L376] var_250 = var_250 & mask_SORT_1 [L377] SORT_14 var_243_arg_0 = input_15; [L378] SORT_14 var_243_arg_1 = var_242; [L379] SORT_1 var_243 = var_243_arg_0 == var_243_arg_1; [L380] SORT_14 var_253_arg_0 = input_15; [L381] SORT_14 var_253_arg_1 = var_252; [L382] SORT_1 var_253 = var_253_arg_0 == var_253_arg_1; [L383] SORT_1 var_254_arg_0 = var_243; [L384] SORT_1 var_254_arg_1 = var_253; [L385] SORT_6 var_254 = ((SORT_6)var_254_arg_0 << 1) | var_254_arg_1; [L386] var_254 = var_254 & mask_SORT_6 [L387] SORT_1 var_255_arg_0 = var_250; [L388] SORT_6 var_255_arg_1 = var_254; [L389] SORT_8 var_255 = ((SORT_8)var_255_arg_0 << 2) | var_255_arg_1; [L390] var_255 = var_255 & mask_SORT_8 [L391] SORT_8 var_256_arg_0 = var_255; [L392] SORT_1 var_256 = var_256_arg_0 != 0; [L393] SORT_14 var_239_arg_0 = input_15; [L394] SORT_14 var_239_arg_1 = var_238; [L395] SORT_1 var_239 = var_239_arg_0 == var_239_arg_1; [L396] SORT_14 var_236_arg_0 = input_15; [L397] SORT_14 var_236_arg_1 = var_235; [L398] SORT_1 var_236 = var_236_arg_0 == var_236_arg_1; [L399] SORT_1 var_240_arg_0 = var_239; [L400] SORT_1 var_240_arg_1 = var_236; [L401] SORT_1 var_240 = var_240_arg_0 | var_240_arg_1; [L402] var_240 = var_240 & mask_SORT_1 [L403] SORT_14 var_233_arg_0 = input_15; [L404] SORT_14 var_233_arg_1 = var_232; [L405] SORT_1 var_233 = var_233_arg_0 == var_233_arg_1; [L406] SORT_14 var_259_arg_0 = input_15; [L407] SORT_14 var_259_arg_1 = var_258; [L408] SORT_1 var_259 = var_259_arg_0 == var_259_arg_1; [L409] SORT_1 var_260_arg_0 = var_233; [L410] SORT_1 var_260_arg_1 = var_259; [L411] SORT_6 var_260 = ((SORT_6)var_260_arg_0 << 1) | var_260_arg_1; [L412] var_260 = var_260 & mask_SORT_6 [L413] SORT_1 var_261_arg_0 = var_240; [L414] SORT_6 var_261_arg_1 = var_260; [L415] SORT_8 var_261 = ((SORT_8)var_261_arg_0 << 2) | var_261_arg_1; [L416] var_261 = var_261 & mask_SORT_8 [L417] SORT_1 var_262_arg_0 = var_256; [L418] SORT_8 var_262_arg_1 = var_261; [L419] SORT_107 var_262 = ((SORT_107)var_262_arg_0 << 3) | var_262_arg_1; [L420] var_262 = var_262 & mask_SORT_107 [L421] SORT_107 var_263_arg_0 = var_262; [L422] SORT_1 var_263 = var_263_arg_0 != 0; [L423] SORT_14 var_224_arg_0 = input_15; [L424] SORT_14 var_224_arg_1 = var_223; [L425] SORT_1 var_224 = var_224_arg_0 == var_224_arg_1; [L426] SORT_14 var_221_arg_0 = input_15; [L427] SORT_14 var_221_arg_1 = var_220; [L428] SORT_1 var_221 = var_221_arg_0 == var_221_arg_1; [L429] SORT_1 var_225_arg_0 = var_224; [L430] SORT_1 var_225_arg_1 = var_221; [L431] SORT_1 var_225 = var_225_arg_0 | var_225_arg_1; [L432] var_225 = var_225 & mask_SORT_1 [L433] SORT_14 var_218_arg_0 = input_15; [L434] SORT_14 var_218_arg_1 = var_119; [L435] SORT_1 var_218 = var_218_arg_0 == var_218_arg_1; [L436] SORT_14 var_227_arg_0 = input_15; [L437] SORT_14 var_227_arg_1 = var_121; [L438] SORT_1 var_227 = var_227_arg_0 == var_227_arg_1; [L439] SORT_1 var_228_arg_0 = var_218; [L440] SORT_1 var_228_arg_1 = var_227; [L441] SORT_6 var_228 = ((SORT_6)var_228_arg_0 << 1) | var_228_arg_1; [L442] var_228 = var_228 & mask_SORT_6 [L443] SORT_1 var_229_arg_0 = var_225; [L444] SORT_6 var_229_arg_1 = var_228; [L445] SORT_8 var_229 = ((SORT_8)var_229_arg_0 << 2) | var_229_arg_1; [L446] var_229 = var_229 & mask_SORT_8 [L447] SORT_8 var_230_arg_0 = var_229; [L448] SORT_1 var_230 = var_230_arg_0 != 0; [L449] SORT_14 var_215_arg_0 = input_15; [L450] SORT_14 var_215_arg_1 = var_125; [L451] SORT_1 var_215 = var_215_arg_0 == var_215_arg_1; [L452] SORT_14 var_213_arg_0 = input_15; [L453] SORT_14 var_213_arg_1 = var_123; [L454] SORT_1 var_213 = var_213_arg_0 == var_213_arg_1; [L455] SORT_1 var_216_arg_0 = var_215; [L456] SORT_1 var_216_arg_1 = var_213; [L457] SORT_1 var_216 = var_216_arg_0 | var_216_arg_1; [L458] var_216 = var_216 & mask_SORT_1 [L459] SORT_14 var_211_arg_0 = input_15; [L460] SORT_14 var_211_arg_1 = var_127; [L461] SORT_1 var_211 = var_211_arg_0 == var_211_arg_1; [L462] SORT_14 var_265_arg_0 = input_15; [L463] SORT_14 var_265_arg_1 = var_129; [L464] SORT_1 var_265 = var_265_arg_0 == var_265_arg_1; [L465] SORT_1 var_266_arg_0 = var_211; [L466] SORT_1 var_266_arg_1 = var_265; [L467] SORT_6 var_266 = ((SORT_6)var_266_arg_0 << 1) | var_266_arg_1; [L468] var_266 = var_266 & mask_SORT_6 [L469] SORT_1 var_267_arg_0 = var_216; [L470] SORT_6 var_267_arg_1 = var_266; [L471] SORT_8 var_267 = ((SORT_8)var_267_arg_0 << 2) | var_267_arg_1; [L472] var_267 = var_267 & mask_SORT_8 [L473] SORT_1 var_268_arg_0 = var_230; [L474] SORT_8 var_268_arg_1 = var_267; [L475] SORT_107 var_268 = ((SORT_107)var_268_arg_0 << 3) | var_268_arg_1; [L476] var_268 = var_268 & mask_SORT_107 [L477] SORT_1 var_269_arg_0 = var_263; [L478] SORT_107 var_269_arg_1 = var_268; [L479] SORT_14 var_269 = ((SORT_14)var_269_arg_0 << 4) | var_269_arg_1; [L480] var_269 = var_269 & mask_SORT_14 [L481] SORT_14 var_270_arg_0 = var_269; [L482] SORT_1 var_270 = var_270_arg_0 != 0; [L483] SORT_1 var_247_arg_0 = var_246; [L484] SORT_1 var_247_arg_1 = var_47; [L485] SORT_1 var_247_arg_2 = var_47; [L486] EXPR var_247_arg_0 ? var_247_arg_1 : var_247_arg_2 [L486] SORT_1 var_247 = var_247_arg_0 ? var_247_arg_1 : var_247_arg_2; [L487] SORT_1 var_244_arg_0 = var_243; [L488] SORT_1 var_244_arg_1 = var_47; [L489] SORT_1 var_244_arg_2 = var_47; [L490] EXPR var_244_arg_0 ? var_244_arg_1 : var_244_arg_2 [L490] SORT_1 var_244 = var_244_arg_0 ? var_244_arg_1 : var_244_arg_2; [L491] SORT_1 var_251_arg_0 = var_250; [L492] SORT_1 var_251_arg_1 = var_247; [L493] SORT_1 var_251_arg_2 = var_244; [L494] EXPR var_251_arg_0 ? var_251_arg_1 : var_251_arg_2 [L494] SORT_1 var_251 = var_251_arg_0 ? var_251_arg_1 : var_251_arg_2; [L495] SORT_1 var_237_arg_0 = var_236; [L496] SORT_1 var_237_arg_1 = var_47; [L497] SORT_1 var_237_arg_2 = var_47; [L498] EXPR var_237_arg_0 ? var_237_arg_1 : var_237_arg_2 [L498] SORT_1 var_237 = var_237_arg_0 ? var_237_arg_1 : var_237_arg_2; [L499] SORT_1 var_234_arg_0 = var_233; [L500] SORT_1 var_234_arg_1 = var_47; [L501] SORT_1 var_234_arg_2 = var_47; [L502] EXPR var_234_arg_0 ? var_234_arg_1 : var_234_arg_2 [L502] SORT_1 var_234 = var_234_arg_0 ? var_234_arg_1 : var_234_arg_2; [L503] SORT_1 var_241_arg_0 = var_240; [L504] SORT_1 var_241_arg_1 = var_237; [L505] SORT_1 var_241_arg_2 = var_234; [L506] EXPR var_241_arg_0 ? var_241_arg_1 : var_241_arg_2 [L506] SORT_1 var_241 = var_241_arg_0 ? var_241_arg_1 : var_241_arg_2; [L507] SORT_1 var_257_arg_0 = var_256; [L508] SORT_1 var_257_arg_1 = var_251; [L509] SORT_1 var_257_arg_2 = var_241; [L510] EXPR var_257_arg_0 ? var_257_arg_1 : var_257_arg_2 [L510] SORT_1 var_257 = var_257_arg_0 ? var_257_arg_1 : var_257_arg_2; [L511] SORT_1 var_222_arg_0 = var_221; [L512] SORT_1 var_222_arg_1 = var_47; [L513] SORT_1 var_222_arg_2 = var_47; [L514] EXPR var_222_arg_0 ? var_222_arg_1 : var_222_arg_2 [L514] SORT_1 var_222 = var_222_arg_0 ? var_222_arg_1 : var_222_arg_2; [L515] SORT_1 var_219_arg_0 = var_218; [L516] SORT_1 var_219_arg_1 = var_28; [L517] SORT_1 var_219_arg_2 = var_28; [L518] EXPR var_219_arg_0 ? var_219_arg_1 : var_219_arg_2 [L518] SORT_1 var_219 = var_219_arg_0 ? var_219_arg_1 : var_219_arg_2; [L519] SORT_1 var_226_arg_0 = var_225; [L520] SORT_1 var_226_arg_1 = var_222; [L521] SORT_1 var_226_arg_2 = var_219; [L522] EXPR var_226_arg_0 ? var_226_arg_1 : var_226_arg_2 [L522] SORT_1 var_226 = var_226_arg_0 ? var_226_arg_1 : var_226_arg_2; [L523] SORT_1 var_214_arg_0 = var_213; [L524] SORT_1 var_214_arg_1 = var_28; [L525] SORT_1 var_214_arg_2 = var_28; [L526] EXPR var_214_arg_0 ? var_214_arg_1 : var_214_arg_2 [L526] SORT_1 var_214 = var_214_arg_0 ? var_214_arg_1 : var_214_arg_2; [L527] SORT_1 var_212_arg_0 = var_211; [L528] SORT_1 var_212_arg_1 = var_28; [L529] SORT_1 var_212_arg_2 = var_28; [L530] EXPR var_212_arg_0 ? var_212_arg_1 : var_212_arg_2 [L530] SORT_1 var_212 = var_212_arg_0 ? var_212_arg_1 : var_212_arg_2; [L531] SORT_1 var_217_arg_0 = var_216; [L532] SORT_1 var_217_arg_1 = var_214; [L533] SORT_1 var_217_arg_2 = var_212; [L534] EXPR var_217_arg_0 ? var_217_arg_1 : var_217_arg_2 [L534] SORT_1 var_217 = var_217_arg_0 ? var_217_arg_1 : var_217_arg_2; [L535] SORT_1 var_231_arg_0 = var_230; [L536] SORT_1 var_231_arg_1 = var_226; [L537] SORT_1 var_231_arg_2 = var_217; [L538] EXPR var_231_arg_0 ? var_231_arg_1 : var_231_arg_2 [L538] SORT_1 var_231 = var_231_arg_0 ? var_231_arg_1 : var_231_arg_2; [L539] SORT_1 var_264_arg_0 = var_263; [L540] SORT_1 var_264_arg_1 = var_257; [L541] SORT_1 var_264_arg_2 = var_231; [L542] EXPR var_264_arg_0 ? var_264_arg_1 : var_264_arg_2 [L542] SORT_1 var_264 = var_264_arg_0 ? var_264_arg_1 : var_264_arg_2; [L543] SORT_14 var_196_arg_0 = input_15; [L544] SORT_14 var_196_arg_1 = var_133; [L545] SORT_1 var_196 = var_196_arg_0 == var_196_arg_1; [L546] SORT_14 var_194_arg_0 = input_15; [L547] SORT_14 var_194_arg_1 = var_131; [L548] SORT_1 var_194 = var_194_arg_0 == var_194_arg_1; [L549] SORT_1 var_197_arg_0 = var_196; [L550] SORT_1 var_197_arg_1 = var_194; [L551] SORT_1 var_197 = var_197_arg_0 | var_197_arg_1; [L552] var_197 = var_197 & mask_SORT_1 [L553] SORT_14 var_192_arg_0 = input_15; [L554] SORT_14 var_192_arg_1 = var_191; [L555] SORT_1 var_192 = var_192_arg_0 == var_192_arg_1; [L556] SORT_14 var_200_arg_0 = input_15; [L557] SORT_14 var_200_arg_1 = var_199; [L558] SORT_1 var_200 = var_200_arg_0 == var_200_arg_1; [L559] SORT_1 var_201_arg_0 = var_192; [L560] SORT_1 var_201_arg_1 = var_200; [L561] SORT_6 var_201 = ((SORT_6)var_201_arg_0 << 1) | var_201_arg_1; [L562] var_201 = var_201 & mask_SORT_6 [L563] SORT_1 var_202_arg_0 = var_197; [L564] SORT_6 var_202_arg_1 = var_201; [L565] SORT_8 var_202 = ((SORT_8)var_202_arg_0 << 2) | var_202_arg_1; [L566] var_202 = var_202 & mask_SORT_8 [L567] SORT_8 var_203_arg_0 = var_202; [L568] SORT_1 var_203 = var_203_arg_0 != 0; [L569] SORT_14 var_188_arg_0 = input_15; [L570] SORT_14 var_188_arg_1 = var_99; [L571] SORT_1 var_188 = var_188_arg_0 == var_188_arg_1; [L572] SORT_14 var_186_arg_0 = input_15; [L573] SORT_14 var_186_arg_1 = var_97; [L574] SORT_1 var_186 = var_186_arg_0 == var_186_arg_1; [L575] SORT_1 var_189_arg_0 = var_188; [L576] SORT_1 var_189_arg_1 = var_186; [L577] SORT_1 var_189 = var_189_arg_0 | var_189_arg_1; [L578] var_189 = var_189 & mask_SORT_1 [L579] SORT_14 var_184_arg_0 = input_15; [L580] SORT_14 var_184_arg_1 = var_103; [L581] SORT_1 var_184 = var_184_arg_0 == var_184_arg_1; [L582] SORT_14 var_205_arg_0 = input_15; [L583] SORT_14 var_205_arg_1 = var_135; [L584] SORT_1 var_205 = var_205_arg_0 == var_205_arg_1; [L585] SORT_1 var_206_arg_0 = var_184; [L586] SORT_1 var_206_arg_1 = var_205; [L587] SORT_6 var_206 = ((SORT_6)var_206_arg_0 << 1) | var_206_arg_1; [L588] var_206 = var_206 & mask_SORT_6 [L589] SORT_1 var_207_arg_0 = var_189; [L590] SORT_6 var_207_arg_1 = var_206; [L591] SORT_8 var_207 = ((SORT_8)var_207_arg_0 << 2) | var_207_arg_1; [L592] var_207 = var_207 & mask_SORT_8 [L593] SORT_1 var_208_arg_0 = var_203; [L594] SORT_8 var_208_arg_1 = var_207; [L595] SORT_107 var_208 = ((SORT_107)var_208_arg_0 << 3) | var_208_arg_1; [L596] var_208 = var_208 & mask_SORT_107 [L597] SORT_107 var_209_arg_0 = var_208; [L598] SORT_1 var_209 = var_209_arg_0 != 0; [L599] SORT_1 var_195_arg_0 = var_194; [L600] SORT_1 var_195_arg_1 = var_28; [L601] SORT_1 var_195_arg_2 = var_28; [L602] EXPR var_195_arg_0 ? var_195_arg_1 : var_195_arg_2 [L602] SORT_1 var_195 = var_195_arg_0 ? var_195_arg_1 : var_195_arg_2; [L603] SORT_1 var_193_arg_0 = var_192; [L604] SORT_1 var_193_arg_1 = var_47; [L605] SORT_1 var_193_arg_2 = var_47; [L606] EXPR var_193_arg_0 ? var_193_arg_1 : var_193_arg_2 [L606] SORT_1 var_193 = var_193_arg_0 ? var_193_arg_1 : var_193_arg_2; [L607] SORT_1 var_198_arg_0 = var_197; [L608] SORT_1 var_198_arg_1 = var_195; [L609] SORT_1 var_198_arg_2 = var_193; [L610] EXPR var_198_arg_0 ? var_198_arg_1 : var_198_arg_2 [L610] SORT_1 var_198 = var_198_arg_0 ? var_198_arg_1 : var_198_arg_2; [L611] SORT_1 var_187_arg_0 = var_186; [L612] SORT_1 var_187_arg_1 = var_28; [L613] SORT_1 var_187_arg_2 = var_28; [L614] EXPR var_187_arg_0 ? var_187_arg_1 : var_187_arg_2 [L614] SORT_1 var_187 = var_187_arg_0 ? var_187_arg_1 : var_187_arg_2; [L615] SORT_1 var_185_arg_0 = var_184; [L616] SORT_1 var_185_arg_1 = var_28; [L617] SORT_1 var_185_arg_2 = var_28; [L618] EXPR var_185_arg_0 ? var_185_arg_1 : var_185_arg_2 [L618] SORT_1 var_185 = var_185_arg_0 ? var_185_arg_1 : var_185_arg_2; [L619] SORT_1 var_190_arg_0 = var_189; [L620] SORT_1 var_190_arg_1 = var_187; [L621] SORT_1 var_190_arg_2 = var_185; [L622] EXPR var_190_arg_0 ? var_190_arg_1 : var_190_arg_2 [L622] SORT_1 var_190 = var_190_arg_0 ? var_190_arg_1 : var_190_arg_2; [L623] SORT_1 var_204_arg_0 = var_203; [L624] SORT_1 var_204_arg_1 = var_198; [L625] SORT_1 var_204_arg_2 = var_190; [L626] EXPR var_204_arg_0 ? var_204_arg_1 : var_204_arg_2 [L626] SORT_1 var_204 = var_204_arg_0 ? var_204_arg_1 : var_204_arg_2; [L627] SORT_14 var_176_arg_0 = input_15; [L628] SORT_14 var_176_arg_1 = var_137; [L629] SORT_1 var_176 = var_176_arg_0 == var_176_arg_1; [L630] SORT_14 var_174_arg_0 = input_15; [L631] SORT_14 var_174_arg_1 = var_173; [L632] SORT_1 var_174 = var_174_arg_0 == var_174_arg_1; [L633] SORT_1 var_177_arg_0 = var_176; [L634] SORT_1 var_177_arg_1 = var_174; [L635] SORT_1 var_177 = var_177_arg_0 | var_177_arg_1; [L636] var_177 = var_177 & mask_SORT_1 [L637] SORT_14 var_171_arg_0 = input_15; [L638] SORT_14 var_171_arg_1 = var_141; [L639] SORT_1 var_171 = var_171_arg_0 == var_171_arg_1; [L640] SORT_14 var_179_arg_0 = input_15; [L641] SORT_14 var_179_arg_1 = var_161; [L642] SORT_1 var_179 = var_179_arg_0 == var_179_arg_1; [L643] SORT_1 var_180_arg_0 = var_171; [L644] SORT_1 var_180_arg_1 = var_179; [L645] SORT_6 var_180 = ((SORT_6)var_180_arg_0 << 1) | var_180_arg_1; [L646] var_180 = var_180 & mask_SORT_6 [L647] SORT_1 var_181_arg_0 = var_177; [L648] SORT_6 var_181_arg_1 = var_180; [L649] SORT_8 var_181 = ((SORT_8)var_181_arg_0 << 2) | var_181_arg_1; [L650] var_181 = var_181 & mask_SORT_8 [L651] SORT_8 var_182_arg_0 = var_181; [L652] SORT_1 var_182 = var_182_arg_0 != 0; [L653] SORT_1 var_175_arg_0 = var_174; [L654] SORT_1 var_175_arg_1 = var_47; [L655] SORT_1 var_175_arg_2 = var_28; [L656] EXPR var_175_arg_0 ? var_175_arg_1 : var_175_arg_2 [L656] SORT_1 var_175 = var_175_arg_0 ? var_175_arg_1 : var_175_arg_2; [L657] SORT_1 var_172_arg_0 = var_171; [L658] SORT_1 var_172_arg_1 = var_28; [L659] SORT_1 var_172_arg_2 = var_28; [L660] EXPR var_172_arg_0 ? var_172_arg_1 : var_172_arg_2 [L660] SORT_1 var_172 = var_172_arg_0 ? var_172_arg_1 : var_172_arg_2; [L661] SORT_1 var_178_arg_0 = var_177; [L662] SORT_1 var_178_arg_1 = var_175; [L663] SORT_1 var_178_arg_2 = var_172; [L664] EXPR var_178_arg_0 ? var_178_arg_1 : var_178_arg_2 [L664] SORT_1 var_178 = var_178_arg_0 ? var_178_arg_1 : var_178_arg_2; [L665] SORT_14 var_168_arg_0 = input_15; [L666] SORT_14 var_168_arg_1 = var_101; [L667] SORT_1 var_168 = var_168_arg_0 == var_168_arg_1; [L668] SORT_14 var_166_arg_0 = input_15; [L669] SORT_14 var_166_arg_1 = var_139; [L670] SORT_1 var_166 = var_166_arg_0 == var_166_arg_1; [L671] SORT_1 var_169_arg_0 = var_168; [L672] SORT_1 var_169_arg_1 = var_166; [L673] SORT_1 var_169 = var_169_arg_0 | var_169_arg_1; [L674] var_169 = var_169 & mask_SORT_1 [L675] SORT_1 var_167_arg_0 = var_166; [L676] SORT_1 var_167_arg_1 = var_28; [L677] SORT_1 var_167_arg_2 = var_28; [L678] EXPR var_167_arg_0 ? var_167_arg_1 : var_167_arg_2 [L678] SORT_1 var_167 = var_167_arg_0 ? var_167_arg_1 : var_167_arg_2; [L679] SORT_14 var_164_arg_0 = input_15; [L680] SORT_14 var_164_arg_1 = var_163; [L681] SORT_1 var_164 = var_164_arg_0 == var_164_arg_1; [L682] SORT_1 var_165_arg_0 = var_164; [L683] SORT_1 var_165_arg_1 = var_47; [L684] SORT_1 var_165_arg_2 = var_47; [L685] EXPR var_165_arg_0 ? var_165_arg_1 : var_165_arg_2 [L685] SORT_1 var_165 = var_165_arg_0 ? var_165_arg_1 : var_165_arg_2; [L686] SORT_1 var_170_arg_0 = var_169; [L687] SORT_1 var_170_arg_1 = var_167; [L688] SORT_1 var_170_arg_2 = var_165; [L689] EXPR var_170_arg_0 ? var_170_arg_1 : var_170_arg_2 [L689] SORT_1 var_170 = var_170_arg_0 ? var_170_arg_1 : var_170_arg_2; [L690] SORT_1 var_183_arg_0 = var_182; [L691] SORT_1 var_183_arg_1 = var_178; [L692] SORT_1 var_183_arg_2 = var_170; [L693] EXPR var_183_arg_0 ? var_183_arg_1 : var_183_arg_2 [L693] SORT_1 var_183 = var_183_arg_0 ? var_183_arg_1 : var_183_arg_2; [L694] SORT_1 var_210_arg_0 = var_209; [L695] SORT_1 var_210_arg_1 = var_204; [L696] SORT_1 var_210_arg_2 = var_183; [L697] EXPR var_210_arg_0 ? var_210_arg_1 : var_210_arg_2 [L697] SORT_1 var_210 = var_210_arg_0 ? var_210_arg_1 : var_210_arg_2; [L698] SORT_1 var_271_arg_0 = var_270; [L699] SORT_1 var_271_arg_1 = var_264; [L700] SORT_1 var_271_arg_2 = var_210; [L701] EXPR var_271_arg_0 ? var_271_arg_1 : var_271_arg_2 [L701] SORT_1 var_271 = var_271_arg_0 ? var_271_arg_1 : var_271_arg_2; [L702] SORT_14 var_162_arg_0 = input_15; [L703] SORT_14 var_162_arg_1 = var_161; [L704] SORT_1 var_162 = var_162_arg_0 == var_162_arg_1; [L705] SORT_14 var_142_arg_0 = input_15; [L706] SORT_14 var_142_arg_1 = var_141; [L707] SORT_1 var_142 = var_142_arg_0 == var_142_arg_1; [L708] SORT_14 var_140_arg_0 = input_15; [L709] SORT_14 var_140_arg_1 = var_139; [L710] SORT_1 var_140 = var_140_arg_0 == var_140_arg_1; [L711] SORT_14 var_138_arg_0 = input_15; [L712] SORT_14 var_138_arg_1 = var_137; [L713] SORT_1 var_138 = var_138_arg_0 == var_138_arg_1; [L714] SORT_14 var_136_arg_0 = input_15; [L715] SORT_14 var_136_arg_1 = var_135; [L716] SORT_1 var_136 = var_136_arg_0 == var_136_arg_1; [L717] SORT_14 var_134_arg_0 = input_15; [L718] SORT_14 var_134_arg_1 = var_133; [L719] SORT_1 var_134 = var_134_arg_0 == var_134_arg_1; [L720] SORT_14 var_132_arg_0 = input_15; [L721] SORT_14 var_132_arg_1 = var_131; [L722] SORT_1 var_132 = var_132_arg_0 == var_132_arg_1; [L723] SORT_14 var_130_arg_0 = input_15; [L724] SORT_14 var_130_arg_1 = var_129; [L725] SORT_1 var_130 = var_130_arg_0 == var_130_arg_1; [L726] SORT_14 var_128_arg_0 = input_15; [L727] SORT_14 var_128_arg_1 = var_127; [L728] SORT_1 var_128 = var_128_arg_0 == var_128_arg_1; [L729] SORT_14 var_126_arg_0 = input_15; [L730] SORT_14 var_126_arg_1 = var_125; [L731] SORT_1 var_126 = var_126_arg_0 == var_126_arg_1; [L732] SORT_14 var_124_arg_0 = input_15; [L733] SORT_14 var_124_arg_1 = var_123; [L734] SORT_1 var_124 = var_124_arg_0 == var_124_arg_1; [L735] SORT_14 var_122_arg_0 = input_15; [L736] SORT_14 var_122_arg_1 = var_121; [L737] SORT_1 var_122 = var_122_arg_0 == var_122_arg_1; [L738] SORT_14 var_120_arg_0 = input_15; [L739] SORT_14 var_120_arg_1 = var_119; [L740] SORT_1 var_120 = var_120_arg_0 == var_120_arg_1; [L741] SORT_1 var_143_arg_0 = var_122; [L742] SORT_1 var_143_arg_1 = var_120; [L743] SORT_6 var_143 = ((SORT_6)var_143_arg_0 << 1) | var_143_arg_1; [L744] var_143 = var_143 & mask_SORT_6 [L745] SORT_1 var_144_arg_0 = var_124; [L746] SORT_6 var_144_arg_1 = var_143; [L747] SORT_8 var_144 = ((SORT_8)var_144_arg_0 << 2) | var_144_arg_1; [L748] var_144 = var_144 & mask_SORT_8 [L749] SORT_1 var_145_arg_0 = var_126; [L750] SORT_8 var_145_arg_1 = var_144; [L751] SORT_107 var_145 = ((SORT_107)var_145_arg_0 << 3) | var_145_arg_1; [L752] var_145 = var_145 & mask_SORT_107 [L753] SORT_1 var_146_arg_0 = var_128; [L754] SORT_107 var_146_arg_1 = var_145; [L755] SORT_14 var_146 = ((SORT_14)var_146_arg_0 << 4) | var_146_arg_1; [L756] var_146 = var_146 & mask_SORT_14 [L757] SORT_1 var_148_arg_0 = var_130; [L758] SORT_14 var_148_arg_1 = var_146; [L759] SORT_147 var_148 = ((SORT_147)var_148_arg_0 << 5) | var_148_arg_1; [L760] var_148 = var_148 & mask_SORT_147 [L761] SORT_1 var_150_arg_0 = var_132; [L762] SORT_147 var_150_arg_1 = var_148; [L763] SORT_149 var_150 = ((SORT_149)var_150_arg_0 << 6) | var_150_arg_1; [L764] var_150 = var_150 & mask_SORT_149 [L765] SORT_1 var_151_arg_0 = var_134; [L766] SORT_149 var_151_arg_1 = var_150; [L767] SORT_17 var_151 = ((SORT_17)var_151_arg_0 << 7) | var_151_arg_1; [L768] var_151 = var_151 & mask_SORT_17 [L769] SORT_1 var_153_arg_0 = var_136; [L770] SORT_17 var_153_arg_1 = var_151; [L771] SORT_152 var_153 = ((SORT_152)var_153_arg_0 << 8) | var_153_arg_1; [L772] var_153 = var_153 & mask_SORT_152 [L773] SORT_1 var_155_arg_0 = var_138; [L774] SORT_152 var_155_arg_1 = var_153; [L775] SORT_154 var_155 = ((SORT_154)var_155_arg_0 << 9) | var_155_arg_1; [L776] var_155 = var_155 & mask_SORT_154 [L777] SORT_1 var_157_arg_0 = var_140; [L778] SORT_154 var_157_arg_1 = var_155; [L779] SORT_156 var_157 = ((SORT_156)var_157_arg_0 << 10) | var_157_arg_1; [L780] var_157 = var_157 & mask_SORT_156 [L781] SORT_1 var_159_arg_0 = var_142; [L782] SORT_156 var_159_arg_1 = var_157; [L783] SORT_158 var_159 = ((SORT_158)var_159_arg_0 << 11) | var_159_arg_1; [L784] var_159 = var_159 & mask_SORT_158 [L785] SORT_158 var_160_arg_0 = var_159; [L786] SORT_1 var_160 = var_160_arg_0 != 0; [L787] SORT_1 var_272_arg_0 = var_162; [L788] SORT_1 var_272_arg_1 = var_160; [L789] SORT_6 var_272 = ((SORT_6)var_272_arg_0 << 1) | var_272_arg_1; [L790] var_272 = var_272 & mask_SORT_6 [L791] SORT_1 var_273_arg_0 = var_271; [L792] SORT_6 var_273_arg_1 = var_272; [L793] SORT_8 var_273 = ((SORT_8)var_273_arg_0 << 2) | var_273_arg_1; [L794] var_273 = var_273 & mask_SORT_8 [L795] SORT_8 var_274_arg_0 = var_273; [L796] SORT_1 var_274 = var_274_arg_0 != 0; [L797] SORT_1 var_88_arg_0 = var_87; [L798] SORT_1 var_88 = ~var_88_arg_0; [L799] var_88 = var_88 & mask_SORT_1 [L800] SORT_1 var_89_arg_0 = input_13; [L801] SORT_1 var_89_arg_1 = var_88; [L802] SORT_6 var_89 = ((SORT_6)var_89_arg_0 << 1) | var_89_arg_1; [L803] var_89 = var_89 & mask_SORT_6 [L804] SORT_6 var_90_arg_0 = var_89; [L805] SORT_1 var_90 = var_90_arg_0 == mask_SORT_6; [L806] SORT_1 var_275_arg_0 = var_274; [L807] SORT_1 var_275_arg_1 = var_90; [L808] SORT_6 var_275 = ((SORT_6)var_275_arg_0 << 1) | var_275_arg_1; [L809] var_275 = var_275 & mask_SORT_6 [L810] SORT_1 var_276_arg_0 = var_84; [L811] SORT_6 var_276_arg_1 = var_275; [L812] SORT_8 var_276 = ((SORT_8)var_276_arg_0 << 2) | var_276_arg_1; [L813] var_276 = var_276 & mask_SORT_8 [L814] SORT_8 var_277_arg_0 = var_276; [L815] SORT_1 var_277 = var_277_arg_0 == mask_SORT_8; [L816] SORT_1 var_116_arg_0 = input_13; [L817] SORT_1 var_116 = ~var_116_arg_0; [L818] SORT_1 var_114_arg_0 = input_13; [L819] SORT_1 var_114_arg_1 = var_87; [L820] SORT_6 var_114 = ((SORT_6)var_114_arg_0 << 1) | var_114_arg_1; [L821] var_114 = var_114 & mask_SORT_6 [L822] SORT_6 var_115_arg_0 = var_114; [L823] SORT_1 var_115 = var_115_arg_0 == mask_SORT_6; [L824] SORT_1 var_117_arg_0 = var_116; [L825] SORT_1 var_117_arg_1 = var_115; [L826] SORT_6 var_117 = ((SORT_6)var_117_arg_0 << 1) | var_117_arg_1; [L827] var_117 = var_117 & mask_SORT_6 [L828] SORT_6 var_118_arg_0 = var_117; [L829] SORT_1 var_118 = var_118_arg_0 != 0; [L830] SORT_1 var_278_arg_0 = var_277; [L831] SORT_1 var_278_arg_1 = var_118; [L832] SORT_6 var_278 = ((SORT_6)var_278_arg_0 << 1) | var_278_arg_1; [L833] var_278 = var_278 & mask_SORT_6 [L834] SORT_6 var_279_arg_0 = var_278; [L835] SORT_1 var_279 = var_279_arg_0 != 0; [L836] SORT_14 var_104_arg_0 = input_15; [L837] SORT_14 var_104_arg_1 = var_103; [L838] SORT_1 var_104 = var_104_arg_0 == var_104_arg_1; [L839] SORT_14 var_102_arg_0 = input_15; [L840] SORT_14 var_102_arg_1 = var_101; [L841] SORT_1 var_102 = var_102_arg_0 == var_102_arg_1; [L842] SORT_14 var_100_arg_0 = input_15; [L843] SORT_14 var_100_arg_1 = var_99; [L844] SORT_1 var_100 = var_100_arg_0 == var_100_arg_1; [L845] SORT_14 var_98_arg_0 = input_15; [L846] SORT_14 var_98_arg_1 = var_97; [L847] SORT_1 var_98 = var_98_arg_0 == var_98_arg_1; [L848] SORT_1 var_105_arg_0 = var_100; [L849] SORT_1 var_105_arg_1 = var_98; [L850] SORT_6 var_105 = ((SORT_6)var_105_arg_0 << 1) | var_105_arg_1; [L851] var_105 = var_105 & mask_SORT_6 [L852] SORT_1 var_106_arg_0 = var_102; [L853] SORT_6 var_106_arg_1 = var_105; [L854] SORT_8 var_106 = ((SORT_8)var_106_arg_0 << 2) | var_106_arg_1; [L855] var_106 = var_106 & mask_SORT_8 [L856] SORT_1 var_108_arg_0 = var_104; [L857] SORT_8 var_108_arg_1 = var_106; [L858] SORT_107 var_108 = ((SORT_107)var_108_arg_0 << 3) | var_108_arg_1; [L859] var_108 = var_108 & mask_SORT_107 [L860] SORT_107 var_109_arg_0 = var_108; [L861] SORT_1 var_109 = var_109_arg_0 != 0; [L862] SORT_1 var_110_arg_0 = var_109; [L863] SORT_1 var_110_arg_1 = var_90; [L864] SORT_6 var_110 = ((SORT_6)var_110_arg_0 << 1) | var_110_arg_1; [L865] var_110 = var_110 & mask_SORT_6 [L866] SORT_1 var_111_arg_0 = var_84; [L867] SORT_6 var_111_arg_1 = var_110; [L868] SORT_8 var_111 = ((SORT_8)var_111_arg_0 << 2) | var_111_arg_1; [L869] var_111 = var_111 & mask_SORT_8 [L870] SORT_8 var_112_arg_0 = var_111; [L871] SORT_1 var_112 = var_112_arg_0 == mask_SORT_8; [L872] SORT_1 var_78_arg_0 = var_77; [L873] SORT_1 var_78 = ~var_78_arg_0; [L874] SORT_1 var_94_arg_0 = var_78; [L875] SORT_1 var_94_arg_1 = var_75; [L876] SORT_6 var_94 = ((SORT_6)var_94_arg_0 << 1) | var_94_arg_1; [L877] var_94 = var_94 & mask_SORT_6 [L878] SORT_6 var_95_arg_0 = var_94; [L879] SORT_1 var_95 = var_95_arg_0 == mask_SORT_6; [L880] SORT_1 var_96_arg_0 = var_95; [L881] SORT_1 var_96_arg_1 = var_77; [L882] SORT_6 var_96 = ((SORT_6)var_96_arg_0 << 1) | var_96_arg_1; [L883] SORT_1 var_85_arg_0 = var_84; [L884] SORT_1 var_85 = ~var_85_arg_0; [L885] var_85 = var_85 & mask_SORT_1 [L886] SORT_1 var_91_arg_0 = var_90; [L887] SORT_1 var_91_arg_1 = var_85; [L888] SORT_6 var_91 = ((SORT_6)var_91_arg_0 << 1) | var_91_arg_1; [L889] var_91 = var_91 & mask_SORT_6 [L890] SORT_6 var_92_arg_0 = var_91; [L891] SORT_1 var_92 = var_92_arg_0 == mask_SORT_6; [L892] SORT_1 var_79_arg_0 = var_75; [L893] SORT_1 var_79_arg_1 = var_73; [L894] SORT_6 var_79 = ((SORT_6)var_79_arg_0 << 1) | var_79_arg_1; [L895] var_79 = var_79 & mask_SORT_6 [L896] SORT_1 var_80_arg_0 = var_78; [L897] SORT_6 var_80_arg_1 = var_79; [L898] SORT_8 var_80 = ((SORT_8)var_80_arg_0 << 2) | var_80_arg_1; [L899] var_80 = var_80 & mask_SORT_8 [L900] SORT_8 var_81_arg_0 = var_80; [L901] SORT_1 var_81 = var_81_arg_0 == mask_SORT_8; [L902] SORT_1 var_82_arg_0 = var_81; [L903] SORT_1 var_82_arg_1 = var_28; [L904] SORT_6 var_82 = ((SORT_6)var_82_arg_0 << 1) | var_82_arg_1; [L905] SORT_1 var_93_arg_0 = var_92; [L906] SORT_6 var_93_arg_1 = var_82; [L907] SORT_6 var_93_arg_2 = var_39; [L908] EXPR var_93_arg_0 ? var_93_arg_1 : var_93_arg_2 [L908] SORT_6 var_93 = var_93_arg_0 ? var_93_arg_1 : var_93_arg_2; [L909] SORT_1 var_113_arg_0 = var_112; [L910] SORT_6 var_113_arg_1 = var_96; [L911] SORT_6 var_113_arg_2 = var_93; [L912] EXPR var_113_arg_0 ? var_113_arg_1 : var_113_arg_2 [L912] SORT_6 var_113 = var_113_arg_0 ? var_113_arg_1 : var_113_arg_2; [L913] SORT_1 var_280_arg_0 = var_279; [L914] SORT_6 var_280_arg_1 = var_39; [L915] SORT_6 var_280_arg_2 = var_113; [L916] EXPR var_280_arg_0 ? var_280_arg_1 : var_280_arg_2 [L916] SORT_6 var_280 = var_280_arg_0 ? var_280_arg_1 : var_280_arg_2; [L917] var_280 = var_280 & mask_SORT_6 [L918] SORT_147 var_282_arg_0 = var_281; [L919] SORT_6 var_282_arg_1 = var_280; [L920] SORT_17 var_282 = ((SORT_17)var_282_arg_0 << 2) | var_282_arg_1; [L921] SORT_1 var_38_arg_0 = state_36; [L922] SORT_17 var_38_arg_1 = state_34; [L923] SORT_17 var_38_arg_2 = input_18; [L924] EXPR var_38_arg_0 ? var_38_arg_1 : var_38_arg_2 [L924] SORT_17 var_38 = var_38_arg_0 ? var_38_arg_1 : var_38_arg_2; [L925] SORT_1 var_44_arg_0 = var_43; [L926] SORT_17 var_44_arg_1 = var_38; [L927] SORT_17 var_44_arg_2 = var_33; [L928] EXPR var_44_arg_0 ? var_44_arg_1 : var_44_arg_2 [L928] SORT_17 var_44 = var_44_arg_0 ? var_44_arg_1 : var_44_arg_2; [L929] SORT_1 var_46_arg_0 = var_45; [L930] SORT_17 var_46_arg_1 = var_33; [L931] SORT_17 var_46_arg_2 = var_44; [L932] EXPR var_46_arg_0 ? var_46_arg_1 : var_46_arg_2 [L932] SORT_17 var_46 = var_46_arg_0 ? var_46_arg_1 : var_46_arg_2; [L933] SORT_1 var_300_arg_0 = var_299; [L934] SORT_17 var_300_arg_1 = var_282; [L935] SORT_17 var_300_arg_2 = var_46; [L936] EXPR var_300_arg_0 ? var_300_arg_1 : var_300_arg_2 [L936] SORT_17 var_300 = var_300_arg_0 ? var_300_arg_1 : var_300_arg_2; [L937] var_300 = var_300 & mask_SORT_17 [L938] SORT_1 var_344_arg_0 = var_85; [L939] SORT_1 var_344_arg_1 = var_90; [L940] SORT_6 var_344 = ((SORT_6)var_344_arg_0 << 1) | var_344_arg_1; [L941] var_344 = var_344 & mask_SORT_6 [L942] SORT_1 var_345_arg_0 = var_77; [L943] SORT_6 var_345_arg_1 = var_344; [L944] SORT_8 var_345 = ((SORT_8)var_345_arg_0 << 2) | var_345_arg_1; [L945] var_345 = var_345 & mask_SORT_8 [L946] SORT_1 var_346_arg_0 = var_293; [L947] SORT_8 var_346_arg_1 = var_345; [L948] SORT_107 var_346 = ((SORT_107)var_346_arg_0 << 3) | var_346_arg_1; [L949] var_346 = var_346 & mask_SORT_107 [L950] SORT_107 var_347_arg_0 = var_346; [L951] SORT_1 var_347 = var_347_arg_0 == mask_SORT_107; [L952] SORT_1 var_313_arg_0 = var_73; [L953] SORT_1 var_313_arg_1 = var_90; [L954] SORT_6 var_313 = ((SORT_6)var_313_arg_0 << 1) | var_313_arg_1; [L955] var_313 = var_313 & mask_SORT_6 [L956] SORT_1 var_314_arg_0 = var_85; [L957] SORT_6 var_314_arg_1 = var_313; [L958] SORT_8 var_314 = ((SORT_8)var_314_arg_0 << 2) | var_314_arg_1; [L959] var_314 = var_314 & mask_SORT_8 [L960] SORT_8 var_315_arg_0 = var_314; [L961] SORT_1 var_315 = var_315_arg_0 == mask_SORT_8; [L962] SORT_1 var_341_arg_0 = var_75; [L963] SORT_1 var_341_arg_1 = var_315; [L964] SORT_6 var_341 = ((SORT_6)var_341_arg_0 << 1) | var_341_arg_1; [L965] var_341 = var_341 & mask_SORT_6 [L966] SORT_1 var_342_arg_0 = var_78; [L967] SORT_6 var_342_arg_1 = var_341; [L968] SORT_8 var_342 = ((SORT_8)var_342_arg_0 << 2) | var_342_arg_1; [L969] var_342 = var_342 & mask_SORT_8 [L970] SORT_8 var_343_arg_0 = var_342; [L971] SORT_1 var_343 = var_343_arg_0 == mask_SORT_8; [L972] SORT_1 var_339_arg_0 = var_277; [L973] SORT_1 var_339_arg_1 = var_162; [L974] SORT_6 var_339 = ((SORT_6)var_339_arg_0 << 1) | var_339_arg_1; [L975] var_339 = var_339 & mask_SORT_6 [L976] SORT_6 var_340_arg_0 = var_339; [L977] SORT_1 var_340 = var_340_arg_0 == mask_SORT_6; [L978] SORT_1 var_348_arg_0 = var_343; [L979] SORT_1 var_348_arg_1 = var_340; [L980] SORT_6 var_348 = ((SORT_6)var_348_arg_0 << 1) | var_348_arg_1; [L981] var_348 = var_348 & mask_SORT_6 [L982] SORT_1 var_349_arg_0 = var_115; [L983] SORT_6 var_349_arg_1 = var_348; [L984] SORT_8 var_349 = ((SORT_8)var_349_arg_0 << 2) | var_349_arg_1; [L985] var_349 = var_349 & mask_SORT_8 [L986] SORT_1 var_350_arg_0 = var_347; [L987] SORT_8 var_350_arg_1 = var_349; [L988] SORT_107 var_350 = ((SORT_107)var_350_arg_0 << 3) | var_350_arg_1; [L989] var_350 = var_350 & mask_SORT_107 [L990] SORT_107 var_351_arg_0 = var_350; [L991] SORT_1 var_351 = var_351_arg_0 != 0; [L992] SORT_1 var_331_arg_0 = var_85; [L993] SORT_1 var_331_arg_1 = var_90; [L994] SORT_6 var_331 = ((SORT_6)var_331_arg_0 << 1) | var_331_arg_1; [L995] var_331 = var_331 & mask_SORT_6 [L996] SORT_1 var_332_arg_0 = var_78; [L997] SORT_6 var_332_arg_1 = var_331; [L998] SORT_8 var_332 = ((SORT_8)var_332_arg_0 << 2) | var_332_arg_1; [L999] var_332 = var_332 & mask_SORT_8 [L1000] SORT_1 var_333_arg_0 = var_293; [L1001] SORT_8 var_333_arg_1 = var_332; [L1002] SORT_107 var_333 = ((SORT_107)var_333_arg_0 << 3) | var_333_arg_1; [L1003] var_333 = var_333 & mask_SORT_107 [L1004] SORT_107 var_334_arg_0 = var_333; [L1005] SORT_1 var_334 = var_334_arg_0 == mask_SORT_107; [L1006] SORT_1 var_327_arg_0 = var_75; [L1007] SORT_1 var_327 = ~var_327_arg_0; [L1008] SORT_1 var_328_arg_0 = var_327; [L1009] SORT_1 var_328_arg_1 = var_315; [L1010] SORT_6 var_328 = ((SORT_6)var_328_arg_0 << 1) | var_328_arg_1; [L1011] var_328 = var_328 & mask_SORT_6 [L1012] SORT_1 var_329_arg_0 = var_78; [L1013] SORT_6 var_329_arg_1 = var_328; [L1014] SORT_8 var_329 = ((SORT_8)var_329_arg_0 << 2) | var_329_arg_1; [L1015] var_329 = var_329 & mask_SORT_8 [L1016] SORT_8 var_330_arg_0 = var_329; [L1017] SORT_1 var_330 = var_330_arg_0 == mask_SORT_8; [L1018] SORT_1 var_335_arg_0 = var_116; [L1019] SORT_1 var_335_arg_1 = var_330; [L1020] SORT_6 var_335 = ((SORT_6)var_335_arg_0 << 1) | var_335_arg_1; [L1021] var_335 = var_335 & mask_SORT_6 [L1022] SORT_1 var_336_arg_0 = var_334; [L1023] SORT_6 var_336_arg_1 = var_335; [L1024] SORT_8 var_336 = ((SORT_8)var_336_arg_0 << 2) | var_336_arg_1; [L1025] var_336 = var_336 & mask_SORT_8 [L1026] SORT_8 var_337_arg_0 = var_336; [L1027] SORT_1 var_337 = var_337_arg_0 != 0; [L1028] SORT_1 var_324_arg_0 = state_36; [L1029] SORT_6 var_324_arg_1 = state_322; [L1030] SORT_6 var_324_arg_2 = input_16; [L1031] EXPR var_324_arg_0 ? var_324_arg_1 : var_324_arg_2 [L1031] SORT_6 var_324 = var_324_arg_0 ? var_324_arg_1 : var_324_arg_2; [L1032] SORT_1 var_325_arg_0 = var_43; [L1033] SORT_6 var_325_arg_1 = var_324; [L1034] SORT_6 var_325_arg_2 = var_39; [L1035] EXPR var_325_arg_0 ? var_325_arg_1 : var_325_arg_2 [L1035] SORT_6 var_325 = var_325_arg_0 ? var_325_arg_1 : var_325_arg_2; [L1036] SORT_1 var_326_arg_0 = var_45; [L1037] SORT_6 var_326_arg_1 = var_39; [L1038] SORT_6 var_326_arg_2 = var_325; [L1039] EXPR var_326_arg_0 ? var_326_arg_1 : var_326_arg_2 [L1039] SORT_6 var_326 = var_326_arg_0 ? var_326_arg_1 : var_326_arg_2; [L1040] SORT_1 var_316_arg_0 = var_315; [L1041] SORT_1 var_316_arg_1 = var_77; [L1042] SORT_6 var_316 = ((SORT_6)var_316_arg_0 << 1) | var_316_arg_1; [L1043] var_316 = var_316 & mask_SORT_6 [L1044] SORT_6 var_317_arg_0 = var_316; [L1045] SORT_1 var_317 = var_317_arg_0 == mask_SORT_6; [L1046] SORT_1 var_309_arg_0 = var_84; [L1047] SORT_1 var_309_arg_1 = var_90; [L1048] SORT_6 var_309 = ((SORT_6)var_309_arg_0 << 1) | var_309_arg_1; [L1049] var_309 = var_309 & mask_SORT_6 [L1050] SORT_1 var_310_arg_0 = var_77; [L1051] SORT_6 var_310_arg_1 = var_309; [L1052] SORT_8 var_310 = ((SORT_8)var_310_arg_0 << 2) | var_310_arg_1; [L1053] var_310 = var_310 & mask_SORT_8 [L1054] SORT_1 var_311_arg_0 = var_109; [L1055] SORT_8 var_311_arg_1 = var_310; [L1056] SORT_107 var_311 = ((SORT_107)var_311_arg_0 << 3) | var_311_arg_1; [L1057] var_311 = var_311 & mask_SORT_107 [L1058] SORT_107 var_312_arg_0 = var_311; [L1059] SORT_1 var_312 = var_312_arg_0 == mask_SORT_107; [L1060] SORT_1 var_307_arg_0 = var_277; [L1061] SORT_1 var_307_arg_1 = var_160; [L1062] SORT_6 var_307 = ((SORT_6)var_307_arg_0 << 1) | var_307_arg_1; [L1063] var_307 = var_307 & mask_SORT_6 [L1064] SORT_6 var_308_arg_0 = var_307; [L1065] SORT_1 var_308 = var_308_arg_0 == mask_SORT_6; [L1066] SORT_1 var_318_arg_0 = var_312; [L1067] SORT_1 var_318_arg_1 = var_308; [L1068] SORT_6 var_318 = ((SORT_6)var_318_arg_0 << 1) | var_318_arg_1; [L1069] var_318 = var_318 & mask_SORT_6 [L1070] SORT_1 var_319_arg_0 = var_317; [L1071] SORT_6 var_319_arg_1 = var_318; [L1072] SORT_8 var_319 = ((SORT_8)var_319_arg_0 << 2) | var_319_arg_1; [L1073] var_319 = var_319 & mask_SORT_8 [L1074] SORT_8 var_320_arg_0 = var_319; [L1075] SORT_1 var_320 = var_320_arg_0 != 0; [L1076] SORT_1 var_302_arg_0 = var_84; [L1077] SORT_1 var_302_arg_1 = var_90; [L1078] SORT_6 var_302 = ((SORT_6)var_302_arg_0 << 1) | var_302_arg_1; [L1079] var_302 = var_302 & mask_SORT_6 [L1080] SORT_1 var_303_arg_0 = var_78; [L1081] SORT_6 var_303_arg_1 = var_302; [L1082] SORT_8 var_303 = ((SORT_8)var_303_arg_0 << 2) | var_303_arg_1; [L1083] var_303 = var_303 & mask_SORT_8 [L1084] SORT_1 var_304_arg_0 = var_109; [L1085] SORT_8 var_304_arg_1 = var_303; [L1086] SORT_107 var_304 = ((SORT_107)var_304_arg_0 << 3) | var_304_arg_1; [L1087] var_304 = var_304 & mask_SORT_107 [L1088] SORT_107 var_305_arg_0 = var_304; [L1089] SORT_1 var_305 = var_305_arg_0 == mask_SORT_107; [L1090] SORT_1 var_301_arg_0 = var_75; [L1091] SORT_1 var_301_arg_1 = var_75; [L1092] SORT_6 var_301 = ((SORT_6)var_301_arg_0 << 1) | var_301_arg_1; [L1093] SORT_1 var_306_arg_0 = var_305; [L1094] SORT_6 var_306_arg_1 = var_301; [L1095] SORT_6 var_306_arg_2 = var_39; [L1096] EXPR var_306_arg_0 ? var_306_arg_1 : var_306_arg_2 [L1096] SORT_6 var_306 = var_306_arg_0 ? var_306_arg_1 : var_306_arg_2; [L1097] SORT_1 var_321_arg_0 = var_320; [L1098] SORT_6 var_321_arg_1 = var_76; [L1099] SORT_6 var_321_arg_2 = var_306; [L1100] EXPR var_321_arg_0 ? var_321_arg_1 : var_321_arg_2 [L1100] SORT_6 var_321 = var_321_arg_0 ? var_321_arg_1 : var_321_arg_2; [L1101] SORT_1 var_338_arg_0 = var_337; [L1102] SORT_6 var_338_arg_1 = var_326; [L1103] SORT_6 var_338_arg_2 = var_321; [L1104] EXPR var_338_arg_0 ? var_338_arg_1 : var_338_arg_2 [L1104] SORT_6 var_338 = var_338_arg_0 ? var_338_arg_1 : var_338_arg_2; [L1105] SORT_1 var_352_arg_0 = var_351; [L1106] SORT_6 var_352_arg_1 = var_86; [L1107] SORT_6 var_352_arg_2 = var_338; [L1108] EXPR var_352_arg_0 ? var_352_arg_1 : var_352_arg_2 [L1108] SORT_6 var_352 = var_352_arg_0 ? var_352_arg_1 : var_352_arg_2; [L1109] var_352 = var_352 & mask_SORT_6 [L1110] SORT_147 var_353_arg_0 = var_281; [L1111] SORT_6 var_353_arg_1 = var_352; [L1112] SORT_17 var_353 = ((SORT_17)var_353_arg_0 << 2) | var_353_arg_1; [L1113] var_353 = var_353 & mask_SORT_17 [L1114] SORT_17 var_354_arg_0 = var_300; [L1115] SORT_17 var_354_arg_1 = var_353; [L1116] SORT_1 var_354 = var_354_arg_0 == var_354_arg_1; [L1117] SORT_1 var_362_arg_0 = var_361; [L1118] SORT_1 var_362_arg_1 = var_354; [L1119] SORT_6 var_362 = ((SORT_6)var_362_arg_0 << 1) | var_362_arg_1; [L1120] var_362 = var_362 & mask_SORT_6 [L1121] SORT_6 var_363_arg_0 = var_362; [L1122] SORT_1 var_363 = var_363_arg_0 == mask_SORT_6; [L1123] SORT_1 var_365_arg_0 = var_364; [L1124] SORT_1 var_365_arg_1 = var_363; [L1125] SORT_6 var_365 = ((SORT_6)var_365_arg_0 << 1) | var_365_arg_1; [L1126] var_365 = var_365 & mask_SORT_6 [L1127] SORT_6 var_366_arg_0 = var_365; [L1128] SORT_1 var_366 = var_366_arg_0 != 0; [L1129] SORT_1 var_32_arg_0 = input_5; [L1130] SORT_1 var_32 = ~var_32_arg_0; [L1131] var_32 = var_32 & mask_SORT_1 [L1132] SORT_1 var_367_arg_0 = var_366; [L1133] SORT_1 var_367_arg_1 = var_32; [L1134] SORT_6 var_367 = ((SORT_6)var_367_arg_0 << 1) | var_367_arg_1; [L1135] var_367 = var_367 & mask_SORT_6 [L1136] SORT_6 var_368_arg_0 = var_367; [L1137] SORT_1 var_368 = var_368_arg_0 == mask_SORT_6; [L1138] SORT_1 var_371_arg_0 = state_36; [L1139] SORT_17 var_371_arg_1 = state_369; [L1140] SORT_17 var_371_arg_2 = input_18; [L1141] EXPR var_371_arg_0 ? var_371_arg_1 : var_371_arg_2 [L1141] SORT_17 var_371 = var_371_arg_0 ? var_371_arg_1 : var_371_arg_2; [L1142] SORT_1 var_372_arg_0 = var_43; [L1143] SORT_17 var_372_arg_1 = var_371; [L1144] SORT_17 var_372_arg_2 = var_33; [L1145] EXPR var_372_arg_0 ? var_372_arg_1 : var_372_arg_2 [L1145] SORT_17 var_372 = var_372_arg_0 ? var_372_arg_1 : var_372_arg_2; [L1146] SORT_1 var_373_arg_0 = var_45; [L1147] SORT_17 var_373_arg_1 = var_33; [L1148] SORT_17 var_373_arg_2 = var_372; [L1149] EXPR var_373_arg_0 ? var_373_arg_1 : var_373_arg_2 [L1149] SORT_17 var_373 = var_373_arg_0 ? var_373_arg_1 : var_373_arg_2; [L1150] SORT_1 var_374_arg_0 = var_299; [L1151] SORT_17 var_374_arg_1 = var_282; [L1152] SORT_17 var_374_arg_2 = var_373; [L1153] EXPR var_374_arg_0 ? var_374_arg_1 : var_374_arg_2 [L1153] SORT_17 var_374 = var_374_arg_0 ? var_374_arg_1 : var_374_arg_2; [L1154] var_374 = var_374 & mask_SORT_17 [L1155] SORT_1 var_377_arg_0 = state_36; [L1156] SORT_6 var_377_arg_1 = state_375; [L1157] SORT_6 var_377_arg_2 = input_16; [L1158] EXPR var_377_arg_0 ? var_377_arg_1 : var_377_arg_2 [L1158] SORT_6 var_377 = var_377_arg_0 ? var_377_arg_1 : var_377_arg_2; [L1159] SORT_1 var_378_arg_0 = var_43; [L1160] SORT_6 var_378_arg_1 = var_377; [L1161] SORT_6 var_378_arg_2 = var_39; [L1162] EXPR var_378_arg_0 ? var_378_arg_1 : var_378_arg_2 [L1162] SORT_6 var_378 = var_378_arg_0 ? var_378_arg_1 : var_378_arg_2; [L1163] SORT_1 var_379_arg_0 = var_45; [L1164] SORT_6 var_379_arg_1 = var_39; [L1165] SORT_6 var_379_arg_2 = var_378; [L1166] EXPR var_379_arg_0 ? var_379_arg_1 : var_379_arg_2 [L1166] SORT_6 var_379 = var_379_arg_0 ? var_379_arg_1 : var_379_arg_2; [L1167] SORT_1 var_380_arg_0 = var_337; [L1168] SORT_6 var_380_arg_1 = var_379; [L1169] SORT_6 var_380_arg_2 = var_321; [L1170] EXPR var_380_arg_0 ? var_380_arg_1 : var_380_arg_2 [L1170] SORT_6 var_380 = var_380_arg_0 ? var_380_arg_1 : var_380_arg_2; [L1171] SORT_1 var_381_arg_0 = var_351; [L1172] SORT_6 var_381_arg_1 = var_86; [L1173] SORT_6 var_381_arg_2 = var_380; [L1174] EXPR var_381_arg_0 ? var_381_arg_1 : var_381_arg_2 [L1174] SORT_6 var_381 = var_381_arg_0 ? var_381_arg_1 : var_381_arg_2; [L1175] var_381 = var_381 & mask_SORT_6 [L1176] SORT_147 var_382_arg_0 = var_281; [L1177] SORT_6 var_382_arg_1 = var_381; [L1178] SORT_17 var_382 = ((SORT_17)var_382_arg_0 << 2) | var_382_arg_1; [L1179] var_382 = var_382 & mask_SORT_17 [L1180] SORT_17 var_383_arg_0 = var_374; [L1181] SORT_17 var_383_arg_1 = var_382; [L1182] SORT_1 var_383 = var_383_arg_0 == var_383_arg_1; [L1183] SORT_1 var_384_arg_0 = var_361; [L1184] SORT_1 var_384_arg_1 = var_383; [L1185] SORT_6 var_384 = ((SORT_6)var_384_arg_0 << 1) | var_384_arg_1; [L1186] var_384 = var_384 & mask_SORT_6 [L1187] SORT_6 var_385_arg_0 = var_384; [L1188] SORT_1 var_385 = var_385_arg_0 == mask_SORT_6; [L1189] SORT_1 var_386_arg_0 = var_364; [L1190] SORT_1 var_386_arg_1 = var_385; [L1191] SORT_6 var_386 = ((SORT_6)var_386_arg_0 << 1) | var_386_arg_1; [L1192] var_386 = var_386 & mask_SORT_6 [L1193] SORT_6 var_387_arg_0 = var_386; [L1194] SORT_1 var_387 = var_387_arg_0 != 0; [L1195] SORT_1 var_388_arg_0 = var_387; [L1196] SORT_1 var_388_arg_1 = var_32; [L1197] SORT_6 var_388 = ((SORT_6)var_388_arg_0 << 1) | var_388_arg_1; [L1198] var_388 = var_388 & mask_SORT_6 [L1199] SORT_6 var_389_arg_0 = var_388; [L1200] SORT_1 var_389 = var_389_arg_0 == mask_SORT_6; [L1201] SORT_1 var_390_arg_0 = var_368; [L1202] SORT_1 var_390_arg_1 = var_389; [L1203] SORT_1 var_390 = var_390_arg_0 == var_390_arg_1; [L1204] SORT_1 var_391_arg_0 = var_31; [L1205] SORT_1 var_391_arg_1 = var_390; [L1206] SORT_1 var_391 = var_391_arg_0 | var_391_arg_1; [L1207] SORT_1 var_394_arg_0 = var_391; [L1208] SORT_1 var_394 = ~var_394_arg_0; [L1209] SORT_1 var_395_arg_0 = var_47; [L1210] SORT_1 var_395_arg_1 = var_394; [L1211] SORT_1 var_395 = var_395_arg_0 & var_395_arg_1; [L1212] var_395 = var_395 & mask_SORT_1 [L1213] SORT_1 bad_396_arg_0 = var_395; [L1214] CALL __VERIFIER_assert(!(bad_396_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 134.0s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 67.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 02:46:10,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal15.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e7e2ff18c533976cc622ae43641cf88155866b5f7bc9850cf6ce8f31b09e9cee --- 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 [2022-11-03 02:46:12,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:46:12,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:46:13,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:46:13,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:46:13,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:46:13,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:46:13,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:46:13,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:46:13,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:46:13,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:46:13,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:46:13,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:46:13,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:46:13,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:46:13,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:46:13,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:46:13,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:46:13,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:46:13,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:46:13,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:46:13,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:46:13,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:46:13,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:46:13,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:46:13,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:46:13,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:46:13,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:46:13,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:46:13,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:46:13,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:46:13,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:46:13,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:46:13,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:46:13,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:46:13,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:46:13,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:46:13,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:46:13,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:46:13,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:46:13,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:46:13,092 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:46:13,146 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:46:13,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:46:13,148 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:46:13,148 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:46:13,149 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:46:13,149 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:46:13,150 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:46:13,150 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:46:13,150 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:46:13,150 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:46:13,151 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:46:13,152 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:46:13,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:46:13,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:46:13,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:46:13,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:46:13,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:46:13,154 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:46:13,154 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:46:13,155 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:46:13,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:46:13,155 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:46:13,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:46:13,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:46:13,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:46:13,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:46:13,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:46:13,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:46:13,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:46:13,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:46:13,157 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:46:13,157 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:46:13,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:46:13,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:46:13,158 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:46:13,159 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7e2ff18c533976cc622ae43641cf88155866b5f7bc9850cf6ce8f31b09e9cee [2022-11-03 02:46:13,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:46:13,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:46:13,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:46:13,571 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:46:13,572 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:46:13,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal15.c [2022-11-03 02:46:13,657 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/data/3456c64ed/39b389b69c4149769232546d2c3156c6/FLAGc9e76c88a [2022-11-03 02:46:14,337 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:46:14,338 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal15.c [2022-11-03 02:46:14,360 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/data/3456c64ed/39b389b69c4149769232546d2c3156c6/FLAGc9e76c88a [2022-11-03 02:46:14,523 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/data/3456c64ed/39b389b69c4149769232546d2c3156c6 [2022-11-03 02:46:14,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:46:14,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:46:14,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:46:14,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:46:14,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:46:14,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:46:14" (1/1) ... [2022-11-03 02:46:14,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23a72775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:14, skipping insertion in model container [2022-11-03 02:46:14,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:46:14" (1/1) ... [2022-11-03 02:46:14,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:46:14,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:46:14,788 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_032a8deb-8c24-4574-97b0-25df4a45f9d0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal15.c[1107,1120] [2022-11-03 02:46:15,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:46:15,206 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:46:15,217 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_032a8deb-8c24-4574-97b0-25df4a45f9d0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal15.c[1107,1120] [2022-11-03 02:46:15,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:46:15,384 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:46:15,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:15 WrapperNode [2022-11-03 02:46:15,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:46:15,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:46:15,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:46:15,386 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:46:15,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:15" (1/1) ... [2022-11-03 02:46:15,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:15" (1/1) ... [2022-11-03 02:46:15,578 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1934 [2022-11-03 02:46:15,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:46:15,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:46:15,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:46:15,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:46:15,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:15" (1/1) ... [2022-11-03 02:46:15,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:15" (1/1) ... [2022-11-03 02:46:15,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:15" (1/1) ... [2022-11-03 02:46:15,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:15" (1/1) ... [2022-11-03 02:46:15,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:15" (1/1) ... [2022-11-03 02:46:15,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:15" (1/1) ... [2022-11-03 02:46:15,736 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:15" (1/1) ... [2022-11-03 02:46:15,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:15" (1/1) ... [2022-11-03 02:46:15,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:46:15,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:46:15,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:46:15,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:46:15,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:15" (1/1) ... [2022-11-03 02:46:15,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:46:15,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:46:15,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:46:15,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:46:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:46:15,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:46:16,318 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:46:16,320 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:46:17,987 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:46:18,007 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:46:18,007 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:46:18,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:46:18 BoogieIcfgContainer [2022-11-03 02:46:18,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:46:18,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:46:18,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:46:18,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:46:18,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:46:14" (1/3) ... [2022-11-03 02:46:18,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393f223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:46:18, skipping insertion in model container [2022-11-03 02:46:18,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:15" (2/3) ... [2022-11-03 02:46:18,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393f223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:46:18, skipping insertion in model container [2022-11-03 02:46:18,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:46:18" (3/3) ... [2022-11-03 02:46:18,022 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal15.c [2022-11-03 02:46:18,043 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:46:18,044 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:46:18,129 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:46:18,137 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=FINITE_AUTOMATA, 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;@75e8229e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:46:18,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:46:18,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 233 states, 231 states have (on average 1.4978354978354977) internal successors, (346), 232 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:18,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:18,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:18,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:18,176 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:18,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:18,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1559164005, now seen corresponding path program 1 times [2022-11-03 02:46:18,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:18,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976741055] [2022-11-03 02:46:18,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:18,204 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:18,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:18,210 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:18,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:46:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:19,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:46:19,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:19,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:19,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:19,410 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:19,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976741055] [2022-11-03 02:46:19,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976741055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:19,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:19,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:46:19,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688774369] [2022-11-03 02:46:19,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:19,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:46:19,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:19,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:46:19,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:46:19,469 INFO L87 Difference]: Start difference. First operand has 233 states, 231 states have (on average 1.4978354978354977) internal successors, (346), 232 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:19,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:19,789 INFO L93 Difference]: Finished difference Result 914 states and 1369 transitions. [2022-11-03 02:46:19,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:46:19,792 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:19,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:19,807 INFO L225 Difference]: With dead ends: 914 [2022-11-03 02:46:19,807 INFO L226 Difference]: Without dead ends: 683 [2022-11-03 02:46:19,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:46:19,815 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 2344 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2344 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:19,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2344 Valid, 1337 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:46:19,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-11-03 02:46:19,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 231. [2022-11-03 02:46:19,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.4869565217391305) internal successors, (342), 230 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 342 transitions. [2022-11-03 02:46:19,898 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 342 transitions. Word has length 139 [2022-11-03 02:46:19,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:19,899 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 342 transitions. [2022-11-03 02:46:19,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:19,899 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 342 transitions. [2022-11-03 02:46:19,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:19,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:19,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:19,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:20,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:20,121 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:20,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:20,121 INFO L85 PathProgramCache]: Analyzing trace with hash -58276445, now seen corresponding path program 1 times [2022-11-03 02:46:20,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:20,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565072904] [2022-11-03 02:46:20,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:20,124 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:20,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:20,126 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:20,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:46:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:20,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:46:20,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:20,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:20,989 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:20,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565072904] [2022-11-03 02:46:20,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565072904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:20,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:20,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:46:20,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614491685] [2022-11-03 02:46:20,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:20,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:46:20,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:20,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:46:20,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:46:20,993 INFO L87 Difference]: Start difference. First operand 231 states and 342 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:21,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:21,228 INFO L93 Difference]: Finished difference Result 916 states and 1358 transitions. [2022-11-03 02:46:21,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:46:21,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:21,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:21,232 INFO L225 Difference]: With dead ends: 916 [2022-11-03 02:46:21,232 INFO L226 Difference]: Without dead ends: 687 [2022-11-03 02:46:21,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:46:21,236 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 2336 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2336 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:21,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2336 Valid, 1339 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:46:21,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-11-03 02:46:21,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 235. [2022-11-03 02:46:21,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.482905982905983) internal successors, (347), 234 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:21,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 347 transitions. [2022-11-03 02:46:21,252 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 347 transitions. Word has length 139 [2022-11-03 02:46:21,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:21,252 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 347 transitions. [2022-11-03 02:46:21,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:21,253 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 347 transitions. [2022-11-03 02:46:21,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:21,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:21,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:21,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-03 02:46:21,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:21,475 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:21,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:21,476 INFO L85 PathProgramCache]: Analyzing trace with hash 616883681, now seen corresponding path program 1 times [2022-11-03 02:46:21,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:21,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860850150] [2022-11-03 02:46:21,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:21,489 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:21,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:21,490 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:21,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:46:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:22,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:46:22,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:22,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:22,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:22,394 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:22,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860850150] [2022-11-03 02:46:22,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860850150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:22,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:22,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:46:22,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699732212] [2022-11-03 02:46:22,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:22,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:46:22,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:22,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:46:22,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:46:22,403 INFO L87 Difference]: Start difference. First operand 235 states and 347 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:22,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:22,640 INFO L93 Difference]: Finished difference Result 922 states and 1364 transitions. [2022-11-03 02:46:22,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:46:22,640 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:22,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:22,643 INFO L225 Difference]: With dead ends: 922 [2022-11-03 02:46:22,643 INFO L226 Difference]: Without dead ends: 689 [2022-11-03 02:46:22,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:46:22,646 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 2330 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2330 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:22,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2330 Valid, 1341 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:46:22,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-11-03 02:46:22,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 237. [2022-11-03 02:46:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.478813559322034) internal successors, (349), 236 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:22,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 349 transitions. [2022-11-03 02:46:22,659 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 349 transitions. Word has length 139 [2022-11-03 02:46:22,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:22,660 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 349 transitions. [2022-11-03 02:46:22,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:22,660 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 349 transitions. [2022-11-03 02:46:22,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:22,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:22,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:22,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:22,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:22,885 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:22,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:22,885 INFO L85 PathProgramCache]: Analyzing trace with hash 32112031, now seen corresponding path program 1 times [2022-11-03 02:46:22,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:22,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697547440] [2022-11-03 02:46:22,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:22,888 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:22,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:22,890 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:22,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:46:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:23,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:46:23,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:23,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:23,866 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:23,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697547440] [2022-11-03 02:46:23,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697547440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:23,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:23,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:46:23,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338688989] [2022-11-03 02:46:23,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:23,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:46:23,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:23,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:46:23,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:46:23,874 INFO L87 Difference]: Start difference. First operand 237 states and 349 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:24,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:24,536 INFO L93 Difference]: Finished difference Result 937 states and 1382 transitions. [2022-11-03 02:46:24,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:46:24,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:24,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:24,540 INFO L225 Difference]: With dead ends: 937 [2022-11-03 02:46:24,541 INFO L226 Difference]: Without dead ends: 702 [2022-11-03 02:46:24,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:46:24,543 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 2676 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2676 SdHoareTripleChecker+Valid, 1926 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:24,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2676 Valid, 1926 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:46:24,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-11-03 02:46:24,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 239. [2022-11-03 02:46:24,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.4747899159663866) internal successors, (351), 238 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:24,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 351 transitions. [2022-11-03 02:46:24,555 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 351 transitions. Word has length 139 [2022-11-03 02:46:24,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:24,555 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 351 transitions. [2022-11-03 02:46:24,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:24,556 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 351 transitions. [2022-11-03 02:46:24,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:24,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:24,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:24,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:24,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:24,782 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:24,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:24,783 INFO L85 PathProgramCache]: Analyzing trace with hash -397546275, now seen corresponding path program 1 times [2022-11-03 02:46:24,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:24,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511762668] [2022-11-03 02:46:24,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:24,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:24,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:24,786 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:24,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:46:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:25,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 02:46:25,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:25,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:25,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:25,742 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:25,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511762668] [2022-11-03 02:46:25,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511762668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:25,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:25,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 02:46:25,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385047678] [2022-11-03 02:46:25,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:25,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 02:46:25,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:25,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 02:46:25,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:46:25,750 INFO L87 Difference]: Start difference. First operand 239 states and 351 transitions. Second operand has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:27,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:27,113 INFO L93 Difference]: Finished difference Result 1203 states and 1760 transitions. [2022-11-03 02:46:27,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 02:46:27,114 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:27,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:27,118 INFO L225 Difference]: With dead ends: 1203 [2022-11-03 02:46:27,118 INFO L226 Difference]: Without dead ends: 966 [2022-11-03 02:46:27,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=384, Invalid=1022, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 02:46:27,120 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 6277 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6277 SdHoareTripleChecker+Valid, 2887 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:27,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6277 Valid, 2887 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:46:27,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-11-03 02:46:27,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 249. [2022-11-03 02:46:27,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.4596774193548387) internal successors, (362), 248 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:27,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 362 transitions. [2022-11-03 02:46:27,132 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 362 transitions. Word has length 139 [2022-11-03 02:46:27,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:27,132 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 362 transitions. [2022-11-03 02:46:27,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:27,133 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 362 transitions. [2022-11-03 02:46:27,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:27,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:27,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:27,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:27,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:27,356 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:27,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:27,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1652862623, now seen corresponding path program 1 times [2022-11-03 02:46:27,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:27,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634438503] [2022-11-03 02:46:27,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:27,358 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:27,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:27,359 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:27,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:46:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:28,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 02:46:28,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:28,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:28,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:28,708 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:28,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634438503] [2022-11-03 02:46:28,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634438503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:28,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:28,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:46:28,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60956613] [2022-11-03 02:46:28,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:28,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:46:28,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:28,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:46:28,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:46:28,711 INFO L87 Difference]: Start difference. First operand 249 states and 362 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:29,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:29,309 INFO L93 Difference]: Finished difference Result 964 states and 1409 transitions. [2022-11-03 02:46:29,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:46:29,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:29,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:29,314 INFO L225 Difference]: With dead ends: 964 [2022-11-03 02:46:29,314 INFO L226 Difference]: Without dead ends: 717 [2022-11-03 02:46:29,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:46:29,317 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 2314 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:29,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2314 Valid, 1295 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:46:29,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-11-03 02:46:29,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 255. [2022-11-03 02:46:29,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.4566929133858268) internal successors, (370), 254 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:29,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 370 transitions. [2022-11-03 02:46:29,330 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 370 transitions. Word has length 139 [2022-11-03 02:46:29,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:29,331 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 370 transitions. [2022-11-03 02:46:29,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:29,331 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 370 transitions. [2022-11-03 02:46:29,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:29,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:29,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:29,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:29,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:29,547 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:29,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:29,547 INFO L85 PathProgramCache]: Analyzing trace with hash 560227421, now seen corresponding path program 1 times [2022-11-03 02:46:29,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:29,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352315629] [2022-11-03 02:46:29,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:29,549 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:29,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:29,550 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:29,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:46:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:30,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:46:30,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:30,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:30,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:30,269 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:30,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352315629] [2022-11-03 02:46:30,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352315629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:30,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:30,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:46:30,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029497314] [2022-11-03 02:46:30,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:30,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:46:30,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:30,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:46:30,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:46:30,272 INFO L87 Difference]: Start difference. First operand 255 states and 370 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:30,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:30,385 INFO L93 Difference]: Finished difference Result 1013 states and 1472 transitions. [2022-11-03 02:46:30,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:46:30,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:30,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:30,389 INFO L225 Difference]: With dead ends: 1013 [2022-11-03 02:46:30,390 INFO L226 Difference]: Without dead ends: 760 [2022-11-03 02:46:30,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:46:30,391 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 962 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:30,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 1331 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:46:30,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-11-03 02:46:30,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 301. [2022-11-03 02:46:30,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.43) internal successors, (429), 300 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:30,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 429 transitions. [2022-11-03 02:46:30,408 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 429 transitions. Word has length 139 [2022-11-03 02:46:30,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:30,409 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 429 transitions. [2022-11-03 02:46:30,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:30,409 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 429 transitions. [2022-11-03 02:46:30,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:30,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:30,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:30,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:30,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:30,627 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:30,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:30,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1282248293, now seen corresponding path program 1 times [2022-11-03 02:46:30,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:30,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670903] [2022-11-03 02:46:30,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:30,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:30,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:30,631 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:30,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:46:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:31,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:46:31,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:31,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:31,362 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:31,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670903] [2022-11-03 02:46:31,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:31,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:31,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:46:31,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775686345] [2022-11-03 02:46:31,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:31,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:46:31,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:31,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:46:31,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:46:31,366 INFO L87 Difference]: Start difference. First operand 301 states and 429 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:31,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:31,472 INFO L93 Difference]: Finished difference Result 1013 states and 1471 transitions. [2022-11-03 02:46:31,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:46:31,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:31,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:31,476 INFO L225 Difference]: With dead ends: 1013 [2022-11-03 02:46:31,476 INFO L226 Difference]: Without dead ends: 760 [2022-11-03 02:46:31,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:46:31,478 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 956 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:31,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 1330 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:46:31,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-11-03 02:46:31,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 303. [2022-11-03 02:46:31,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.4271523178807948) internal successors, (431), 302 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:31,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 431 transitions. [2022-11-03 02:46:31,494 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 431 transitions. Word has length 139 [2022-11-03 02:46:31,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:31,494 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 431 transitions. [2022-11-03 02:46:31,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:31,495 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 431 transitions. [2022-11-03 02:46:31,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:31,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:31,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:31,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-03 02:46:31,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:31,726 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:31,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:31,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1614891431, now seen corresponding path program 1 times [2022-11-03 02:46:31,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:31,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934665926] [2022-11-03 02:46:31,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:31,729 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:31,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:31,730 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:31,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:46:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:32,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:46:32,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:32,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:32,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:32,588 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:32,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934665926] [2022-11-03 02:46:32,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934665926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:32,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:32,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:46:32,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263544872] [2022-11-03 02:46:32,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:32,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:46:32,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:32,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:46:32,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:46:32,590 INFO L87 Difference]: Start difference. First operand 303 states and 431 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:32,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:32,838 INFO L93 Difference]: Finished difference Result 1070 states and 1545 transitions. [2022-11-03 02:46:32,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:46:32,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:32,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:32,842 INFO L225 Difference]: With dead ends: 1070 [2022-11-03 02:46:32,842 INFO L226 Difference]: Without dead ends: 817 [2022-11-03 02:46:32,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:46:32,843 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 2277 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2277 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:32,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2277 Valid, 1491 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:46:32,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-11-03 02:46:32,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 309. [2022-11-03 02:46:32,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.4253246753246753) internal successors, (439), 308 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:32,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 439 transitions. [2022-11-03 02:46:32,864 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 439 transitions. Word has length 139 [2022-11-03 02:46:32,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:32,864 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 439 transitions. [2022-11-03 02:46:32,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:32,865 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 439 transitions. [2022-11-03 02:46:32,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:32,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:32,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:32,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:33,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:33,085 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:33,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:33,085 INFO L85 PathProgramCache]: Analyzing trace with hash -225597417, now seen corresponding path program 1 times [2022-11-03 02:46:33,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:33,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025021764] [2022-11-03 02:46:33,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:33,087 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:33,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:33,088 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:33,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 02:46:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:33,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:46:33,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:33,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:33,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:33,950 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:33,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025021764] [2022-11-03 02:46:33,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025021764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:33,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:33,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:46:33,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601440015] [2022-11-03 02:46:33,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:33,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:46:33,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:33,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:46:33,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:46:33,953 INFO L87 Difference]: Start difference. First operand 309 states and 439 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:34,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:34,197 INFO L93 Difference]: Finished difference Result 1078 states and 1554 transitions. [2022-11-03 02:46:34,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:46:34,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:34,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:34,201 INFO L225 Difference]: With dead ends: 1078 [2022-11-03 02:46:34,201 INFO L226 Difference]: Without dead ends: 819 [2022-11-03 02:46:34,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:46:34,203 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 2271 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:34,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2271 Valid, 1494 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:46:34,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-11-03 02:46:34,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 311. [2022-11-03 02:46:34,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.4225806451612903) internal successors, (441), 310 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:34,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 441 transitions. [2022-11-03 02:46:34,218 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 441 transitions. Word has length 139 [2022-11-03 02:46:34,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:34,219 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 441 transitions. [2022-11-03 02:46:34,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:34,219 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 441 transitions. [2022-11-03 02:46:34,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:34,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:34,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:34,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:34,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:34,433 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:34,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:34,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2092306091, now seen corresponding path program 1 times [2022-11-03 02:46:34,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:34,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29059880] [2022-11-03 02:46:34,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:34,435 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:34,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:34,436 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:34,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:46:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:35,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:46:35,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:35,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:35,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:35,552 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:35,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29059880] [2022-11-03 02:46:35,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29059880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:35,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:35,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:46:35,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312991450] [2022-11-03 02:46:35,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:35,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:46:35,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:35,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:46:35,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:46:35,556 INFO L87 Difference]: Start difference. First operand 311 states and 441 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:36,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:36,101 INFO L93 Difference]: Finished difference Result 1082 states and 1557 transitions. [2022-11-03 02:46:36,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:46:36,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:36,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:36,105 INFO L225 Difference]: With dead ends: 1082 [2022-11-03 02:46:36,105 INFO L226 Difference]: Without dead ends: 821 [2022-11-03 02:46:36,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:46:36,107 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 2265 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2265 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:36,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2265 Valid, 1425 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:46:36,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2022-11-03 02:46:36,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 313. [2022-11-03 02:46:36,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 1.419871794871795) internal successors, (443), 312 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:36,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 443 transitions. [2022-11-03 02:46:36,127 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 443 transitions. Word has length 139 [2022-11-03 02:46:36,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:36,127 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 443 transitions. [2022-11-03 02:46:36,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:36,127 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 443 transitions. [2022-11-03 02:46:36,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:36,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:36,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:36,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:36,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:36,348 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:36,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:36,349 INFO L85 PathProgramCache]: Analyzing trace with hash -194809325, now seen corresponding path program 1 times [2022-11-03 02:46:36,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:36,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1165647264] [2022-11-03 02:46:36,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:36,350 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:36,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:36,352 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:36,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 02:46:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:36,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:46:37,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:37,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:37,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:37,194 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:37,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1165647264] [2022-11-03 02:46:37,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1165647264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:37,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:37,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:46:37,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256184969] [2022-11-03 02:46:37,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:37,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:46:37,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:37,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:46:37,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:46:37,196 INFO L87 Difference]: Start difference. First operand 313 states and 443 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:37,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:37,435 INFO L93 Difference]: Finished difference Result 1088 states and 1563 transitions. [2022-11-03 02:46:37,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:46:37,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:37,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:37,439 INFO L225 Difference]: With dead ends: 1088 [2022-11-03 02:46:37,439 INFO L226 Difference]: Without dead ends: 825 [2022-11-03 02:46:37,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:46:37,440 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 2257 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2257 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:37,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2257 Valid, 1503 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:46:37,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2022-11-03 02:46:37,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 317. [2022-11-03 02:46:37,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.4177215189873418) internal successors, (448), 316 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:37,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 448 transitions. [2022-11-03 02:46:37,456 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 448 transitions. Word has length 139 [2022-11-03 02:46:37,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:37,458 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 448 transitions. [2022-11-03 02:46:37,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:37,459 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 448 transitions. [2022-11-03 02:46:37,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:37,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:37,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:37,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:37,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:37,686 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:37,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:37,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1251540527, now seen corresponding path program 1 times [2022-11-03 02:46:37,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:37,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102000072] [2022-11-03 02:46:37,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:37,688 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:37,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:37,689 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:37,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 02:46:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:38,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:46:38,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:38,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:38,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:38,497 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:38,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102000072] [2022-11-03 02:46:38,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102000072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:38,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:38,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:46:38,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693793632] [2022-11-03 02:46:38,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:38,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:46:38,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:38,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:46:38,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:46:38,500 INFO L87 Difference]: Start difference. First operand 317 states and 448 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:38,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:38,804 INFO L93 Difference]: Finished difference Result 1094 states and 1569 transitions. [2022-11-03 02:46:38,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:46:38,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:38,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:38,808 INFO L225 Difference]: With dead ends: 1094 [2022-11-03 02:46:38,808 INFO L226 Difference]: Without dead ends: 827 [2022-11-03 02:46:38,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:46:38,810 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 2251 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2251 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:38,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2251 Valid, 1502 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:46:38,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2022-11-03 02:46:38,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 319. [2022-11-03 02:46:38,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 1.4150943396226414) internal successors, (450), 318 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:38,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 450 transitions. [2022-11-03 02:46:38,825 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 450 transitions. Word has length 139 [2022-11-03 02:46:38,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:38,825 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 450 transitions. [2022-11-03 02:46:38,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:38,826 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 450 transitions. [2022-11-03 02:46:38,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:38,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:38,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:38,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:39,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:39,047 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:39,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:39,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1424451855, now seen corresponding path program 1 times [2022-11-03 02:46:39,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:39,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357873924] [2022-11-03 02:46:39,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:39,048 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:39,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:39,051 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:39,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 02:46:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:39,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:46:39,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:40,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:40,046 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:40,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357873924] [2022-11-03 02:46:40,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357873924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:40,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:40,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:46:40,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888637189] [2022-11-03 02:46:40,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:40,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:46:40,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:40,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:46:40,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:46:40,049 INFO L87 Difference]: Start difference. First operand 319 states and 450 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:40,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:40,500 INFO L93 Difference]: Finished difference Result 1098 states and 1572 transitions. [2022-11-03 02:46:40,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:46:40,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:40,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:40,503 INFO L225 Difference]: With dead ends: 1098 [2022-11-03 02:46:40,503 INFO L226 Difference]: Without dead ends: 829 [2022-11-03 02:46:40,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:46:40,505 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 2245 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2245 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:40,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2245 Valid, 1437 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:46:40,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-11-03 02:46:40,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 321. [2022-11-03 02:46:40,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.4125) internal successors, (452), 320 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:40,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 452 transitions. [2022-11-03 02:46:40,521 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 452 transitions. Word has length 139 [2022-11-03 02:46:40,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:40,522 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 452 transitions. [2022-11-03 02:46:40,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:40,522 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 452 transitions. [2022-11-03 02:46:40,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:40,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:40,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:40,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:40,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:40,739 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:40,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:40,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1395951565, now seen corresponding path program 1 times [2022-11-03 02:46:40,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:40,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561291282] [2022-11-03 02:46:40,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:40,741 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:40,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:40,742 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:40,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 02:46:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:41,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:46:41,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:41,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:41,541 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:41,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561291282] [2022-11-03 02:46:41,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561291282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:41,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:41,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:46:41,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19666075] [2022-11-03 02:46:41,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:41,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:46:41,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:41,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:46:41,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:46:41,544 INFO L87 Difference]: Start difference. First operand 321 states and 452 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:41,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:41,837 INFO L93 Difference]: Finished difference Result 1104 states and 1578 transitions. [2022-11-03 02:46:41,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:46:41,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:41,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:41,840 INFO L225 Difference]: With dead ends: 1104 [2022-11-03 02:46:41,840 INFO L226 Difference]: Without dead ends: 833 [2022-11-03 02:46:41,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:46:41,842 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 2237 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2237 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:41,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2237 Valid, 1511 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:46:41,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-11-03 02:46:41,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 325. [2022-11-03 02:46:41,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.4104938271604939) internal successors, (457), 324 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:41,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 457 transitions. [2022-11-03 02:46:41,856 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 457 transitions. Word has length 139 [2022-11-03 02:46:41,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:41,857 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 457 transitions. [2022-11-03 02:46:41,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:41,857 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 457 transitions. [2022-11-03 02:46:41,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:41,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:41,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:41,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:42,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:42,077 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:42,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:42,077 INFO L85 PathProgramCache]: Analyzing trace with hash 401257867, now seen corresponding path program 1 times [2022-11-03 02:46:42,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:42,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786892075] [2022-11-03 02:46:42,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:42,079 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:42,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:42,080 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:42,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 02:46:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:42,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:46:42,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:43,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:43,096 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:43,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786892075] [2022-11-03 02:46:43,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786892075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:43,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:43,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:46:43,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429746875] [2022-11-03 02:46:43,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:43,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:46:43,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:43,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:46:43,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:46:43,098 INFO L87 Difference]: Start difference. First operand 325 states and 457 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:43,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:43,508 INFO L93 Difference]: Finished difference Result 1110 states and 1584 transitions. [2022-11-03 02:46:43,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:46:43,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:43,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:43,513 INFO L225 Difference]: With dead ends: 1110 [2022-11-03 02:46:43,513 INFO L226 Difference]: Without dead ends: 835 [2022-11-03 02:46:43,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:46:43,515 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 2231 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2231 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:43,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2231 Valid, 1446 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:46:43,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-11-03 02:46:43,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 327. [2022-11-03 02:46:43,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.4079754601226995) internal successors, (459), 326 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:43,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 459 transitions. [2022-11-03 02:46:43,533 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 459 transitions. Word has length 139 [2022-11-03 02:46:43,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:43,534 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 459 transitions. [2022-11-03 02:46:43,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:43,534 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 459 transitions. [2022-11-03 02:46:43,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:43,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:43,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:43,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:43,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:43,764 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:43,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:43,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1557316919, now seen corresponding path program 1 times [2022-11-03 02:46:43,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:43,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972892375] [2022-11-03 02:46:43,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:43,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:43,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:43,767 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:43,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 02:46:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:44,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 02:46:44,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:45,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:45,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:45,372 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:45,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972892375] [2022-11-03 02:46:45,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972892375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:45,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:45,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:46:45,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88026342] [2022-11-03 02:46:45,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:45,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:46:45,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:45,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:46:45,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:46:45,374 INFO L87 Difference]: Start difference. First operand 327 states and 459 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:45,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:45,895 INFO L93 Difference]: Finished difference Result 1114 states and 1587 transitions. [2022-11-03 02:46:45,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:46:45,895 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:45,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:45,899 INFO L225 Difference]: With dead ends: 1114 [2022-11-03 02:46:45,899 INFO L226 Difference]: Without dead ends: 837 [2022-11-03 02:46:45,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:46:45,903 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 2225 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2225 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:45,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2225 Valid, 1457 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:46:45,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2022-11-03 02:46:45,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 329. [2022-11-03 02:46:45,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.4054878048780488) internal successors, (461), 328 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:45,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 461 transitions. [2022-11-03 02:46:45,920 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 461 transitions. Word has length 139 [2022-11-03 02:46:45,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:45,920 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 461 transitions. [2022-11-03 02:46:45,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:45,921 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 461 transitions. [2022-11-03 02:46:45,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:45,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:45,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:45,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:46,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:46,141 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:46,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:46,142 INFO L85 PathProgramCache]: Analyzing trace with hash 858519431, now seen corresponding path program 1 times [2022-11-03 02:46:46,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:46,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744260299] [2022-11-03 02:46:46,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:46,143 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:46,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:46,144 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:46,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 02:46:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:46,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:46:46,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:47,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:47,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:47,056 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:47,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744260299] [2022-11-03 02:46:47,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744260299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:47,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:47,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:46:47,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322236596] [2022-11-03 02:46:47,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:47,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:46:47,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:47,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:46:47,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:46:47,064 INFO L87 Difference]: Start difference. First operand 329 states and 461 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:47,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:47,407 INFO L93 Difference]: Finished difference Result 1063 states and 1517 transitions. [2022-11-03 02:46:47,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:46:47,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:47,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:47,410 INFO L225 Difference]: With dead ends: 1063 [2022-11-03 02:46:47,410 INFO L226 Difference]: Without dead ends: 784 [2022-11-03 02:46:47,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:46:47,411 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 2063 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2063 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:47,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2063 Valid, 1471 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:46:47,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-11-03 02:46:47,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 333. [2022-11-03 02:46:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 1.4036144578313252) internal successors, (466), 332 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:47,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 466 transitions. [2022-11-03 02:46:47,433 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 466 transitions. Word has length 139 [2022-11-03 02:46:47,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:47,433 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 466 transitions. [2022-11-03 02:46:47,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:47,434 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 466 transitions. [2022-11-03 02:46:47,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:47,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:47,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:47,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:47,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:47,656 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:47,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:47,656 INFO L85 PathProgramCache]: Analyzing trace with hash -283983035, now seen corresponding path program 1 times [2022-11-03 02:46:47,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:47,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282746060] [2022-11-03 02:46:47,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:47,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:47,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:47,659 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:47,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 02:46:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:48,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:46:48,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:48,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:48,526 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:48,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282746060] [2022-11-03 02:46:48,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282746060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:48,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:48,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:46:48,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953305534] [2022-11-03 02:46:48,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:48,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:46:48,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:48,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:46:48,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:46:48,529 INFO L87 Difference]: Start difference. First operand 333 states and 466 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:48,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:48,967 INFO L93 Difference]: Finished difference Result 1180 states and 1671 transitions. [2022-11-03 02:46:48,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:46:48,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:48,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:48,971 INFO L225 Difference]: With dead ends: 1180 [2022-11-03 02:46:48,971 INFO L226 Difference]: Without dead ends: 897 [2022-11-03 02:46:48,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:46:48,973 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 2542 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2542 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:48,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2542 Valid, 2129 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:46:48,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-11-03 02:46:48,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 335. [2022-11-03 02:46:48,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.401197604790419) internal successors, (468), 334 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:48,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 468 transitions. [2022-11-03 02:46:48,991 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 468 transitions. Word has length 139 [2022-11-03 02:46:48,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:48,991 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 468 transitions. [2022-11-03 02:46:48,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:48,992 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 468 transitions. [2022-11-03 02:46:48,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:48,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:48,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:49,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:49,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:49,211 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:49,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:49,211 INFO L85 PathProgramCache]: Analyzing trace with hash 555050627, now seen corresponding path program 1 times [2022-11-03 02:46:49,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:49,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759693382] [2022-11-03 02:46:49,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:49,213 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:49,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:49,214 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:49,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 02:46:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:49,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:46:49,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:50,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:50,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:50,046 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:50,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759693382] [2022-11-03 02:46:50,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759693382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:50,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:50,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:46:50,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587235568] [2022-11-03 02:46:50,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:50,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:46:50,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:50,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:46:50,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:46:50,049 INFO L87 Difference]: Start difference. First operand 335 states and 468 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:50,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:50,510 INFO L93 Difference]: Finished difference Result 1186 states and 1677 transitions. [2022-11-03 02:46:50,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:46:50,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:50,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:50,516 INFO L225 Difference]: With dead ends: 1186 [2022-11-03 02:46:50,516 INFO L226 Difference]: Without dead ends: 901 [2022-11-03 02:46:50,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:46:50,517 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 2533 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2533 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:50,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2533 Valid, 2135 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:46:50,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2022-11-03 02:46:50,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 339. [2022-11-03 02:46:50,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.3994082840236686) internal successors, (473), 338 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:50,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 473 transitions. [2022-11-03 02:46:50,535 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 473 transitions. Word has length 139 [2022-11-03 02:46:50,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:50,535 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 473 transitions. [2022-11-03 02:46:50,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:50,536 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 473 transitions. [2022-11-03 02:46:50,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:50,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:50,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:50,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:50,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:50,751 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:50,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:50,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1442273473, now seen corresponding path program 1 times [2022-11-03 02:46:50,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:50,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132107307] [2022-11-03 02:46:50,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:50,752 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:50,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:50,753 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:50,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 02:46:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:51,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:46:51,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:51,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:51,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:51,678 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:51,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132107307] [2022-11-03 02:46:51,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132107307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:51,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:51,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:46:51,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396745975] [2022-11-03 02:46:51,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:51,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:46:51,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:51,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:46:51,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:46:51,680 INFO L87 Difference]: Start difference. First operand 339 states and 473 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:52,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:52,182 INFO L93 Difference]: Finished difference Result 1192 states and 1683 transitions. [2022-11-03 02:46:52,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:46:52,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:52,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:52,187 INFO L225 Difference]: With dead ends: 1192 [2022-11-03 02:46:52,187 INFO L226 Difference]: Without dead ends: 903 [2022-11-03 02:46:52,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:46:52,189 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 2526 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2526 SdHoareTripleChecker+Valid, 2138 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:52,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2526 Valid, 2138 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:46:52,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-11-03 02:46:52,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 341. [2022-11-03 02:46:52,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.3970588235294117) internal successors, (475), 340 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:52,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 475 transitions. [2022-11-03 02:46:52,210 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 475 transitions. Word has length 139 [2022-11-03 02:46:52,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:52,210 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 475 transitions. [2022-11-03 02:46:52,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:52,211 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 475 transitions. [2022-11-03 02:46:52,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:52,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:52,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:52,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:52,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:52,427 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:52,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:52,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1519174271, now seen corresponding path program 1 times [2022-11-03 02:46:52,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:52,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782596428] [2022-11-03 02:46:52,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:52,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:52,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:52,430 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:52,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 02:46:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:53,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:46:53,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:53,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:53,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:53,657 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:53,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782596428] [2022-11-03 02:46:53,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782596428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:53,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:53,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:46:53,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598999600] [2022-11-03 02:46:53,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:53,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:46:53,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:53,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:46:53,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:46:53,661 INFO L87 Difference]: Start difference. First operand 341 states and 475 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:54,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:54,286 INFO L93 Difference]: Finished difference Result 1196 states and 1686 transitions. [2022-11-03 02:46:54,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:46:54,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:54,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:54,291 INFO L225 Difference]: With dead ends: 1196 [2022-11-03 02:46:54,291 INFO L226 Difference]: Without dead ends: 905 [2022-11-03 02:46:54,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:46:54,293 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 2516 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2516 SdHoareTripleChecker+Valid, 2071 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:54,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2516 Valid, 2071 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:46:54,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2022-11-03 02:46:54,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 343. [2022-11-03 02:46:54,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.394736842105263) internal successors, (477), 342 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:54,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 477 transitions. [2022-11-03 02:46:54,312 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 477 transitions. Word has length 139 [2022-11-03 02:46:54,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:54,312 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 477 transitions. [2022-11-03 02:46:54,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:54,313 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 477 transitions. [2022-11-03 02:46:54,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:54,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:54,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:54,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:54,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:54,527 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:54,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:54,527 INFO L85 PathProgramCache]: Analyzing trace with hash -867335235, now seen corresponding path program 1 times [2022-11-03 02:46:54,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:54,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136164943] [2022-11-03 02:46:54,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:54,528 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:54,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:54,530 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:54,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 02:46:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:55,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 02:46:55,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:56,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:56,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:56,434 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:56,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136164943] [2022-11-03 02:46:56,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136164943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:56,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:56,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:46:56,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197240400] [2022-11-03 02:46:56,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:56,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:46:56,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:56,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:46:56,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:46:56,439 INFO L87 Difference]: Start difference. First operand 343 states and 477 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:57,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:57,193 INFO L93 Difference]: Finished difference Result 1200 states and 1689 transitions. [2022-11-03 02:46:57,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:46:57,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:57,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:57,196 INFO L225 Difference]: With dead ends: 1200 [2022-11-03 02:46:57,196 INFO L226 Difference]: Without dead ends: 907 [2022-11-03 02:46:57,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:46:57,197 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 2509 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2509 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:57,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2509 Valid, 2077 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:46:57,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2022-11-03 02:46:57,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 345. [2022-11-03 02:46:57,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.3924418604651163) internal successors, (479), 344 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:57,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 479 transitions. [2022-11-03 02:46:57,215 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 479 transitions. Word has length 139 [2022-11-03 02:46:57,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:57,215 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 479 transitions. [2022-11-03 02:46:57,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:57,216 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 479 transitions. [2022-11-03 02:46:57,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:57,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:57,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:57,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:57,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:57,431 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:57,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:57,431 INFO L85 PathProgramCache]: Analyzing trace with hash 86604923, now seen corresponding path program 1 times [2022-11-03 02:46:57,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:57,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550239608] [2022-11-03 02:46:57,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:57,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:57,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:57,433 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:57,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 02:46:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:57,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:46:58,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:58,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:58,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:58,346 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:58,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550239608] [2022-11-03 02:46:58,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [550239608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:58,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:58,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:46:58,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523865353] [2022-11-03 02:46:58,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:58,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:46:58,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:58,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:46:58,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:46:58,349 INFO L87 Difference]: Start difference. First operand 345 states and 479 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:58,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:58,718 INFO L93 Difference]: Finished difference Result 1093 states and 1544 transitions. [2022-11-03 02:46:58,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:46:58,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:46:58,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:58,721 INFO L225 Difference]: With dead ends: 1093 [2022-11-03 02:46:58,721 INFO L226 Difference]: Without dead ends: 798 [2022-11-03 02:46:58,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:46:58,722 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 2025 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:58,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2025 Valid, 1491 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:46:58,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-11-03 02:46:58,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 347. [2022-11-03 02:46:58,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.3901734104046244) internal successors, (481), 346 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:58,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 481 transitions. [2022-11-03 02:46:58,741 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 481 transitions. Word has length 139 [2022-11-03 02:46:58,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:58,742 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 481 transitions. [2022-11-03 02:46:58,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:58,742 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 481 transitions. [2022-11-03 02:46:58,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:46:58,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:58,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:58,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-03 02:46:58,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:58,962 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:58,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:58,963 INFO L85 PathProgramCache]: Analyzing trace with hash -645362503, now seen corresponding path program 1 times [2022-11-03 02:46:58,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:58,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623616168] [2022-11-03 02:46:58,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:58,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:58,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:58,965 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:58,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 02:46:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:59,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:46:59,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:59,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:59,890 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:59,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623616168] [2022-11-03 02:46:59,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623616168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:59,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:59,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:46:59,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803986386] [2022-11-03 02:46:59,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:59,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:46:59,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:59,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:46:59,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:46:59,893 INFO L87 Difference]: Start difference. First operand 347 states and 481 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:00,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:00,380 INFO L93 Difference]: Finished difference Result 1236 states and 1731 transitions. [2022-11-03 02:47:00,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:47:00,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:47:00,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:00,383 INFO L225 Difference]: With dead ends: 1236 [2022-11-03 02:47:00,383 INFO L226 Difference]: Without dead ends: 939 [2022-11-03 02:47:00,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:47:00,385 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 2555 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2555 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:00,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2555 Valid, 2149 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:47:00,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-11-03 02:47:00,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 349. [2022-11-03 02:47:00,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.3879310344827587) internal successors, (483), 348 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:00,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 483 transitions. [2022-11-03 02:47:00,404 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 483 transitions. Word has length 139 [2022-11-03 02:47:00,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:00,404 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 483 transitions. [2022-11-03 02:47:00,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:00,405 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 483 transitions. [2022-11-03 02:47:00,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:47:00,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:00,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:00,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-03 02:47:00,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:00,619 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:00,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:00,619 INFO L85 PathProgramCache]: Analyzing trace with hash -699755401, now seen corresponding path program 1 times [2022-11-03 02:47:00,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:00,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555768495] [2022-11-03 02:47:00,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:00,621 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:00,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:00,622 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:00,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-03 02:47:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:01,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:47:01,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:01,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:47:01,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:01,904 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:01,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555768495] [2022-11-03 02:47:01,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555768495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:01,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:01,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:47:01,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816382377] [2022-11-03 02:47:01,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:01,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:47:01,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:01,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:47:01,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:47:01,908 INFO L87 Difference]: Start difference. First operand 349 states and 483 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:02,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:02,542 INFO L93 Difference]: Finished difference Result 1240 states and 1734 transitions. [2022-11-03 02:47:02,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:47:02,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:47:02,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:02,547 INFO L225 Difference]: With dead ends: 1240 [2022-11-03 02:47:02,547 INFO L226 Difference]: Without dead ends: 941 [2022-11-03 02:47:02,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:47:02,549 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 2545 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2545 SdHoareTripleChecker+Valid, 2082 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:02,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2545 Valid, 2082 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:47:02,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-11-03 02:47:02,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 351. [2022-11-03 02:47:02,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.3857142857142857) internal successors, (485), 350 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:02,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 485 transitions. [2022-11-03 02:47:02,567 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 485 transitions. Word has length 139 [2022-11-03 02:47:02,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:02,567 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 485 transitions. [2022-11-03 02:47:02,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:02,568 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 485 transitions. [2022-11-03 02:47:02,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:47:02,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:02,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:02,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-03 02:47:02,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:02,788 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:02,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:02,789 INFO L85 PathProgramCache]: Analyzing trace with hash -20483147, now seen corresponding path program 1 times [2022-11-03 02:47:02,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:02,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802402568] [2022-11-03 02:47:02,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:02,790 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:02,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:02,792 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:02,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 02:47:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:03,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:47:03,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:03,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:47:03,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:03,704 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:03,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802402568] [2022-11-03 02:47:03,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1802402568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:03,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:03,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:47:03,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900374137] [2022-11-03 02:47:03,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:03,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:47:03,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:03,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:47:03,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:47:03,707 INFO L87 Difference]: Start difference. First operand 351 states and 485 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:04,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:04,084 INFO L93 Difference]: Finished difference Result 1105 states and 1553 transitions. [2022-11-03 02:47:04,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:47:04,084 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:47:04,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:04,089 INFO L225 Difference]: With dead ends: 1105 [2022-11-03 02:47:04,089 INFO L226 Difference]: Without dead ends: 804 [2022-11-03 02:47:04,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:47:04,091 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 2007 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:04,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2007 Valid, 1499 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:47:04,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-11-03 02:47:04,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 353. [2022-11-03 02:47:04,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.3835227272727273) internal successors, (487), 352 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:04,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 487 transitions. [2022-11-03 02:47:04,110 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 487 transitions. Word has length 139 [2022-11-03 02:47:04,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:04,110 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 487 transitions. [2022-11-03 02:47:04,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:04,111 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 487 transitions. [2022-11-03 02:47:04,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:47:04,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:04,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:04,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-03 02:47:04,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:04,327 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:04,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:04,327 INFO L85 PathProgramCache]: Analyzing trace with hash 181340787, now seen corresponding path program 1 times [2022-11-03 02:47:04,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:04,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804854722] [2022-11-03 02:47:04,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:04,329 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:04,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:04,330 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:04,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-03 02:47:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:04,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:47:04,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:05,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:47:05,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:05,742 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:05,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804854722] [2022-11-03 02:47:05,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804854722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:05,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:05,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:47:05,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769727146] [2022-11-03 02:47:05,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:05,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:47:05,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:05,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:47:05,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:47:05,744 INFO L87 Difference]: Start difference. First operand 353 states and 487 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:06,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:06,423 INFO L93 Difference]: Finished difference Result 1262 states and 1758 transitions. [2022-11-03 02:47:06,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:47:06,424 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:47:06,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:06,427 INFO L225 Difference]: With dead ends: 1262 [2022-11-03 02:47:06,427 INFO L226 Difference]: Without dead ends: 959 [2022-11-03 02:47:06,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:47:06,428 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 2553 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2553 SdHoareTripleChecker+Valid, 2089 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:06,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2553 Valid, 2089 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:47:06,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-11-03 02:47:06,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 357. [2022-11-03 02:47:06,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.3820224719101124) internal successors, (492), 356 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:06,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 492 transitions. [2022-11-03 02:47:06,454 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 492 transitions. Word has length 139 [2022-11-03 02:47:06,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:06,454 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 492 transitions. [2022-11-03 02:47:06,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:06,455 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 492 transitions. [2022-11-03 02:47:06,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:47:06,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:06,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:06,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-03 02:47:06,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:06,671 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:06,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:06,671 INFO L85 PathProgramCache]: Analyzing trace with hash 222015537, now seen corresponding path program 1 times [2022-11-03 02:47:06,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:06,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468023370] [2022-11-03 02:47:06,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:06,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:06,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:06,673 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:06,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-03 02:47:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:07,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 02:47:07,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:08,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:47:08,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:08,648 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:08,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468023370] [2022-11-03 02:47:08,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468023370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:08,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:08,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:47:08,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648504455] [2022-11-03 02:47:08,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:08,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:47:08,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:08,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:47:08,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:47:08,650 INFO L87 Difference]: Start difference. First operand 357 states and 492 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:09,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:09,385 INFO L93 Difference]: Finished difference Result 1256 states and 1749 transitions. [2022-11-03 02:47:09,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:47:09,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:47:09,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:09,387 INFO L225 Difference]: With dead ends: 1256 [2022-11-03 02:47:09,387 INFO L226 Difference]: Without dead ends: 949 [2022-11-03 02:47:09,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:47:09,389 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 2522 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2522 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:09,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2522 Valid, 2095 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:47:09,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-11-03 02:47:09,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 359. [2022-11-03 02:47:09,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.3798882681564246) internal successors, (494), 358 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:09,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 494 transitions. [2022-11-03 02:47:09,403 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 494 transitions. Word has length 139 [2022-11-03 02:47:09,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:09,404 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 494 transitions. [2022-11-03 02:47:09,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:09,404 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 494 transitions. [2022-11-03 02:47:09,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:47:09,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:09,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:09,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-03 02:47:09,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:09,623 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:09,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:09,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1098034543, now seen corresponding path program 1 times [2022-11-03 02:47:09,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:09,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574702147] [2022-11-03 02:47:09,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:09,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:09,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:09,630 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:09,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-03 02:47:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:10,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-03 02:47:10,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:12,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:47:12,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:12,717 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:12,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574702147] [2022-11-03 02:47:12,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574702147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:12,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:12,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:47:12,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093655921] [2022-11-03 02:47:12,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:12,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:47:12,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:12,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:47:12,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:47:12,720 INFO L87 Difference]: Start difference. First operand 359 states and 494 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:13,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:13,636 INFO L93 Difference]: Finished difference Result 1232 states and 1716 transitions. [2022-11-03 02:47:13,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:47:13,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:47:13,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:13,640 INFO L225 Difference]: With dead ends: 1232 [2022-11-03 02:47:13,640 INFO L226 Difference]: Without dead ends: 923 [2022-11-03 02:47:13,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:47:13,641 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 2458 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2458 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:13,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2458 Valid, 2098 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:47:13,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2022-11-03 02:47:13,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 361. [2022-11-03 02:47:13,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.3777777777777778) internal successors, (496), 360 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:13,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 496 transitions. [2022-11-03 02:47:13,658 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 496 transitions. Word has length 139 [2022-11-03 02:47:13,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:13,659 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 496 transitions. [2022-11-03 02:47:13,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:13,659 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 496 transitions. [2022-11-03 02:47:13,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:47:13,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:13,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:13,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-11-03 02:47:13,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:13,878 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:13,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:13,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1658592723, now seen corresponding path program 1 times [2022-11-03 02:47:13,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:13,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513178100] [2022-11-03 02:47:13,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:13,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:13,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:13,881 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:13,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 02:47:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:14,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:47:14,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:14,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:47:14,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:14,771 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:14,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513178100] [2022-11-03 02:47:14,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513178100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:14,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:14,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:47:14,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748630202] [2022-11-03 02:47:14,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:14,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:47:14,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:14,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:47:14,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:47:14,773 INFO L87 Difference]: Start difference. First operand 361 states and 496 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:15,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:15,227 INFO L93 Difference]: Finished difference Result 1418 states and 1957 transitions. [2022-11-03 02:47:15,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:47:15,228 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:47:15,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:15,231 INFO L225 Difference]: With dead ends: 1418 [2022-11-03 02:47:15,231 INFO L226 Difference]: Without dead ends: 1107 [2022-11-03 02:47:15,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:47:15,232 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 2126 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2126 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:15,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2126 Valid, 1781 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:47:15,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-11-03 02:47:15,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 363. [2022-11-03 02:47:15,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.3756906077348066) internal successors, (498), 362 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:15,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 498 transitions. [2022-11-03 02:47:15,251 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 498 transitions. Word has length 139 [2022-11-03 02:47:15,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:15,252 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 498 transitions. [2022-11-03 02:47:15,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:15,252 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 498 transitions. [2022-11-03 02:47:15,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:47:15,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:15,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:15,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-03 02:47:15,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:15,459 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:15,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:15,459 INFO L85 PathProgramCache]: Analyzing trace with hash 269679979, now seen corresponding path program 1 times [2022-11-03 02:47:15,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:15,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571281256] [2022-11-03 02:47:15,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:15,461 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:15,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:15,462 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:15,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-03 02:47:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:16,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:47:16,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:16,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:47:16,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:16,191 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:16,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1571281256] [2022-11-03 02:47:16,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1571281256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:16,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:16,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:47:16,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629668118] [2022-11-03 02:47:16,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:16,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:47:16,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:16,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:47:16,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:47:16,193 INFO L87 Difference]: Start difference. First operand 363 states and 498 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:16,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:16,295 INFO L93 Difference]: Finished difference Result 1253 states and 1738 transitions. [2022-11-03 02:47:16,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:47:16,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:47:16,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:16,299 INFO L225 Difference]: With dead ends: 1253 [2022-11-03 02:47:16,299 INFO L226 Difference]: Without dead ends: 940 [2022-11-03 02:47:16,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:47:16,300 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 770 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:16,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 1329 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:47:16,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2022-11-03 02:47:16,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 497. [2022-11-03 02:47:16,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.3608870967741935) internal successors, (675), 496 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:16,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 675 transitions. [2022-11-03 02:47:16,316 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 675 transitions. Word has length 139 [2022-11-03 02:47:16,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:16,316 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 675 transitions. [2022-11-03 02:47:16,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:16,317 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 675 transitions. [2022-11-03 02:47:16,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:47:16,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:16,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:16,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-03 02:47:16,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:16,537 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:16,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:16,537 INFO L85 PathProgramCache]: Analyzing trace with hash 517826473, now seen corresponding path program 1 times [2022-11-03 02:47:16,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:16,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099326012] [2022-11-03 02:47:16,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:16,538 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:16,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:16,539 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:16,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 02:47:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:17,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:47:17,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:47:17,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:17,214 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:17,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099326012] [2022-11-03 02:47:17,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099326012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:17,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:17,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:47:17,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323129572] [2022-11-03 02:47:17,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:17,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:47:17,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:17,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:47:17,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:47:17,216 INFO L87 Difference]: Start difference. First operand 497 states and 675 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:17,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:17,304 INFO L93 Difference]: Finished difference Result 1253 states and 1737 transitions. [2022-11-03 02:47:17,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:47:17,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:47:17,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:17,306 INFO L225 Difference]: With dead ends: 1253 [2022-11-03 02:47:17,306 INFO L226 Difference]: Without dead ends: 940 [2022-11-03 02:47:17,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:47:17,307 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 749 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:17,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 1328 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:47:17,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2022-11-03 02:47:17,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 505. [2022-11-03 02:47:17,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 1.3611111111111112) internal successors, (686), 504 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:17,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 686 transitions. [2022-11-03 02:47:17,328 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 686 transitions. Word has length 139 [2022-11-03 02:47:17,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:17,329 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 686 transitions. [2022-11-03 02:47:17,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:17,330 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 686 transitions. [2022-11-03 02:47:17,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:47:17,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:17,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:17,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-11-03 02:47:17,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:17,547 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:17,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:17,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1726156825, now seen corresponding path program 1 times [2022-11-03 02:47:17,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:17,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829655269] [2022-11-03 02:47:17,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:17,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:17,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:17,549 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:17,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-03 02:47:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:18,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-03 02:47:18,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:20,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:47:20,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:20,169 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:20,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829655269] [2022-11-03 02:47:20,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829655269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:20,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:20,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:47:20,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487641929] [2022-11-03 02:47:20,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:20,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:47:20,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:20,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:47:20,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:47:20,171 INFO L87 Difference]: Start difference. First operand 505 states and 686 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:21,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:21,013 INFO L93 Difference]: Finished difference Result 1494 states and 2060 transitions. [2022-11-03 02:47:21,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:47:21,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:47:21,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:21,016 INFO L225 Difference]: With dead ends: 1494 [2022-11-03 02:47:21,016 INFO L226 Difference]: Without dead ends: 1181 [2022-11-03 02:47:21,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:47:21,017 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 2572 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2572 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:21,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2572 Valid, 2129 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:47:21,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-11-03 02:47:21,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 551. [2022-11-03 02:47:21,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 550 states have (on average 1.3636363636363635) internal successors, (750), 550 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:21,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 750 transitions. [2022-11-03 02:47:21,043 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 750 transitions. Word has length 139 [2022-11-03 02:47:21,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:21,043 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 750 transitions. [2022-11-03 02:47:21,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:21,044 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 750 transitions. [2022-11-03 02:47:21,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:47:21,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:21,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:21,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-11-03 02:47:21,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:21,264 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:21,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:21,264 INFO L85 PathProgramCache]: Analyzing trace with hash 2059337381, now seen corresponding path program 1 times [2022-11-03 02:47:21,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:21,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884555189] [2022-11-03 02:47:21,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:21,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:21,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:21,266 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:21,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-03 02:47:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:21,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 136 conjunts are in the unsatisfiable core [2022-11-03 02:47:21,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:31,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:47:31,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:31,731 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:31,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884555189] [2022-11-03 02:47:31,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884555189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:31,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:31,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-03 02:47:31,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486101164] [2022-11-03 02:47:31,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:31,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-03 02:47:31,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:31,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-03 02:47:31,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:47:31,733 INFO L87 Difference]: Start difference. First operand 551 states and 750 transitions. Second operand has 26 states, 26 states have (on average 5.346153846153846) internal successors, (139), 26 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:37,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:37,325 INFO L93 Difference]: Finished difference Result 2564 states and 3506 transitions. [2022-11-03 02:47:37,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 02:47:37,327 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.346153846153846) internal successors, (139), 26 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:47:37,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:37,334 INFO L225 Difference]: With dead ends: 2564 [2022-11-03 02:47:37,334 INFO L226 Difference]: Without dead ends: 2225 [2022-11-03 02:47:37,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=278, Invalid=1884, Unknown=0, NotChecked=0, Total=2162 [2022-11-03 02:47:37,337 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 5350 mSDsluCounter, 10464 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5350 SdHoareTripleChecker+Valid, 10891 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 344 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:37,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5350 Valid, 10891 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 958 Invalid, 0 Unknown, 344 Unchecked, 1.9s Time] [2022-11-03 02:47:37,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2022-11-03 02:47:37,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 731. [2022-11-03 02:47:37,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 730 states have (on average 1.3520547945205479) internal successors, (987), 730 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:37,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 987 transitions. [2022-11-03 02:47:37,383 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 987 transitions. Word has length 139 [2022-11-03 02:47:37,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:37,383 INFO L495 AbstractCegarLoop]: Abstraction has 731 states and 987 transitions. [2022-11-03 02:47:37,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.346153846153846) internal successors, (139), 26 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:37,384 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 987 transitions. [2022-11-03 02:47:37,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:47:37,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:37,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:37,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-03 02:47:37,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:37,604 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:37,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:37,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1925323875, now seen corresponding path program 1 times [2022-11-03 02:47:37,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:37,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200807593] [2022-11-03 02:47:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:37,606 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:37,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:37,607 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:37,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-03 02:47:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:38,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:47:38,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:38,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:47:38,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:38,448 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:38,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200807593] [2022-11-03 02:47:38,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200807593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:38,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:38,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:47:38,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271342409] [2022-11-03 02:47:38,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:38,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:47:38,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:38,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:47:38,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:47:38,450 INFO L87 Difference]: Start difference. First operand 731 states and 987 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:38,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:38,551 INFO L93 Difference]: Finished difference Result 1537 states and 2119 transitions. [2022-11-03 02:47:38,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:47:38,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:47:38,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:38,554 INFO L225 Difference]: With dead ends: 1537 [2022-11-03 02:47:38,555 INFO L226 Difference]: Without dead ends: 1198 [2022-11-03 02:47:38,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:47:38,556 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 713 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:38,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 1327 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:47:38,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2022-11-03 02:47:38,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 751. [2022-11-03 02:47:38,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 1.3533333333333333) internal successors, (1015), 750 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:38,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1015 transitions. [2022-11-03 02:47:38,584 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1015 transitions. Word has length 139 [2022-11-03 02:47:38,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:38,585 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 1015 transitions. [2022-11-03 02:47:38,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:38,586 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1015 transitions. [2022-11-03 02:47:38,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:47:38,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:38,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:38,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-11-03 02:47:38,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:38,803 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:38,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:38,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1107675425, now seen corresponding path program 1 times [2022-11-03 02:47:38,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:38,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544031236] [2022-11-03 02:47:38,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:38,805 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:38,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:38,805 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:38,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-03 02:47:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:39,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:47:39,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:47:39,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:39,432 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:39,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544031236] [2022-11-03 02:47:39,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544031236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:39,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:39,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:47:39,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767586897] [2022-11-03 02:47:39,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:39,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:47:39,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:39,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:47:39,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:47:39,434 INFO L87 Difference]: Start difference. First operand 751 states and 1015 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:39,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:39,576 INFO L93 Difference]: Finished difference Result 1770 states and 2432 transitions. [2022-11-03 02:47:39,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:47:39,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:47:39,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:39,580 INFO L225 Difference]: With dead ends: 1770 [2022-11-03 02:47:39,580 INFO L226 Difference]: Without dead ends: 1431 [2022-11-03 02:47:39,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:47:39,581 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 1575 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:39,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 2025 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:47:39,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2022-11-03 02:47:39,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 773. [2022-11-03 02:47:39,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 772 states have (on average 1.354922279792746) internal successors, (1046), 772 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:39,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1046 transitions. [2022-11-03 02:47:39,615 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1046 transitions. Word has length 139 [2022-11-03 02:47:39,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:39,617 INFO L495 AbstractCegarLoop]: Abstraction has 773 states and 1046 transitions. [2022-11-03 02:47:39,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:39,617 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1046 transitions. [2022-11-03 02:47:39,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:47:39,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:39,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:39,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-03 02:47:39,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:39,838 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:39,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:39,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1164933727, now seen corresponding path program 1 times [2022-11-03 02:47:39,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:39,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528343034] [2022-11-03 02:47:39,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:39,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:39,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:39,842 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:39,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-03 02:47:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:40,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:47:40,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:40,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:47:40,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:40,980 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:40,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528343034] [2022-11-03 02:47:40,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528343034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:40,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:40,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:47:40,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561925454] [2022-11-03 02:47:40,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:40,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:47:40,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:40,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:47:40,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:47:40,982 INFO L87 Difference]: Start difference. First operand 773 states and 1046 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:41,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:41,304 INFO L93 Difference]: Finished difference Result 1161 states and 1589 transitions. [2022-11-03 02:47:41,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:47:41,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 02:47:41,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:41,307 INFO L225 Difference]: With dead ends: 1161 [2022-11-03 02:47:41,307 INFO L226 Difference]: Without dead ends: 1159 [2022-11-03 02:47:41,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:47:41,308 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 861 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:41,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1494 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:47:41,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2022-11-03 02:47:41,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 805. [2022-11-03 02:47:41,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 804 states have (on average 1.3582089552238805) internal successors, (1092), 804 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:41,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1092 transitions. [2022-11-03 02:47:41,334 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1092 transitions. Word has length 139 [2022-11-03 02:47:41,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:41,334 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1092 transitions. [2022-11-03 02:47:41,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:41,335 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1092 transitions. [2022-11-03 02:47:41,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:47:41,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:41,339 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:47:41,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-03 02:47:41,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:41,558 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:41,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:41,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1887064715, now seen corresponding path program 1 times [2022-11-03 02:47:41,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:41,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808858567] [2022-11-03 02:47:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:41,561 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:41,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:41,562 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:41,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-03 02:47:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:42,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-03 02:47:42,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:47,700 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:47:47,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:47,700 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:47,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808858567] [2022-11-03 02:47:47,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808858567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:47,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:47,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-03 02:47:47,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071057873] [2022-11-03 02:47:47,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:47,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 02:47:47,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:47,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 02:47:47,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2022-11-03 02:47:47,706 INFO L87 Difference]: Start difference. First operand 805 states and 1092 transitions. Second operand has 19 states, 19 states have (on average 19.157894736842106) internal successors, (364), 19 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:47,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:47,877 INFO L93 Difference]: Finished difference Result 1744 states and 2397 transitions. [2022-11-03 02:47:47,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-03 02:47:47,877 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 19.157894736842106) internal successors, (364), 19 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:47:47,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:47,879 INFO L225 Difference]: With dead ends: 1744 [2022-11-03 02:47:47,879 INFO L226 Difference]: Without dead ends: 1387 [2022-11-03 02:47:47,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2022-11-03 02:47:47,880 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 871 mSDsluCounter, 6987 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 7441 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 572 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:47,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 7441 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 572 Unchecked, 0.1s Time] [2022-11-03 02:47:47,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2022-11-03 02:47:47,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 925. [2022-11-03 02:47:47,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 924 states have (on average 1.3593073593073592) internal successors, (1256), 924 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:47,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1256 transitions. [2022-11-03 02:47:47,907 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1256 transitions. Word has length 364 [2022-11-03 02:47:47,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:47,908 INFO L495 AbstractCegarLoop]: Abstraction has 925 states and 1256 transitions. [2022-11-03 02:47:47,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 19.157894736842106) internal successors, (364), 19 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:47,908 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1256 transitions. [2022-11-03 02:47:47,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:47:47,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:47,912 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:47:47,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-03 02:47:48,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:48,119 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:48,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:48,119 INFO L85 PathProgramCache]: Analyzing trace with hash 536654605, now seen corresponding path program 1 times [2022-11-03 02:47:48,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:48,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1165907576] [2022-11-03 02:47:48,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:48,122 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:48,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:48,123 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:48,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-03 02:47:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:49,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-03 02:47:49,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:55,747 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:47:55,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:55,748 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:55,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1165907576] [2022-11-03 02:47:55,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1165907576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:55,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:55,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-03 02:47:55,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960643277] [2022-11-03 02:47:55,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:55,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-03 02:47:55,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:55,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-03 02:47:55,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-11-03 02:47:55,750 INFO L87 Difference]: Start difference. First operand 925 states and 1256 transitions. Second operand has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:56,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:56,175 INFO L93 Difference]: Finished difference Result 2440 states and 3350 transitions. [2022-11-03 02:47:56,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 02:47:56,176 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:47:56,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:56,180 INFO L225 Difference]: With dead ends: 2440 [2022-11-03 02:47:56,181 INFO L226 Difference]: Without dead ends: 2083 [2022-11-03 02:47:56,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-11-03 02:47:56,183 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 1915 mSDsluCounter, 8049 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 8500 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 687 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:56,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1915 Valid, 8500 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 687 Unchecked, 0.2s Time] [2022-11-03 02:47:56,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2022-11-03 02:47:56,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 929. [2022-11-03 02:47:56,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 928 states have (on average 1.3577586206896552) internal successors, (1260), 928 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:56,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1260 transitions. [2022-11-03 02:47:56,215 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1260 transitions. Word has length 364 [2022-11-03 02:47:56,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:56,216 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1260 transitions. [2022-11-03 02:47:56,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:56,216 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1260 transitions. [2022-11-03 02:47:56,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:47:56,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:56,220 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:47:56,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-03 02:47:56,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:56,433 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:56,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:56,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1312902159, now seen corresponding path program 1 times [2022-11-03 02:47:56,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:56,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062269343] [2022-11-03 02:47:56,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:56,435 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:56,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:56,436 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:56,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-03 02:47:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:57,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:47:57,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:57,723 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:47:57,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:57,724 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:57,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062269343] [2022-11-03 02:47:57,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062269343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:57,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:57,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:47:57,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246665970] [2022-11-03 02:47:57,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:57,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:47:57,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:57,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:47:57,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:47:57,731 INFO L87 Difference]: Start difference. First operand 929 states and 1260 transitions. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:57,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:57,947 INFO L93 Difference]: Finished difference Result 1299 states and 1777 transitions. [2022-11-03 02:47:57,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:47:57,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:47:57,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:57,949 INFO L225 Difference]: With dead ends: 1299 [2022-11-03 02:47:57,949 INFO L226 Difference]: Without dead ends: 942 [2022-11-03 02:47:57,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:47:57,951 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 525 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:57,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 714 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:47:57,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2022-11-03 02:47:57,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 929. [2022-11-03 02:47:57,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 928 states have (on average 1.3566810344827587) internal successors, (1259), 928 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:57,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1259 transitions. [2022-11-03 02:47:57,976 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1259 transitions. Word has length 364 [2022-11-03 02:47:57,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:57,976 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1259 transitions. [2022-11-03 02:47:57,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:57,977 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1259 transitions. [2022-11-03 02:47:57,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:47:57,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:57,980 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:47:58,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-03 02:47:58,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:58,206 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:58,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:58,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1558710033, now seen corresponding path program 1 times [2022-11-03 02:47:58,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:58,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779826840] [2022-11-03 02:47:58,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:58,209 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:58,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:58,211 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:58,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-03 02:47:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:59,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:47:59,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:59,461 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:47:59,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:59,461 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:59,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779826840] [2022-11-03 02:47:59,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779826840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:59,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:59,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:47:59,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384012766] [2022-11-03 02:47:59,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:59,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:47:59,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:59,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:47:59,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:47:59,464 INFO L87 Difference]: Start difference. First operand 929 states and 1259 transitions. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:59,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:59,666 INFO L93 Difference]: Finished difference Result 1303 states and 1780 transitions. [2022-11-03 02:47:59,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:47:59,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:47:59,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:59,668 INFO L225 Difference]: With dead ends: 1303 [2022-11-03 02:47:59,668 INFO L226 Difference]: Without dead ends: 946 [2022-11-03 02:47:59,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:47:59,669 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 519 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:59,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 721 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:47:59,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2022-11-03 02:47:59,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 929. [2022-11-03 02:47:59,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 928 states have (on average 1.355603448275862) internal successors, (1258), 928 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:59,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1258 transitions. [2022-11-03 02:47:59,693 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1258 transitions. Word has length 364 [2022-11-03 02:47:59,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:59,693 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1258 transitions. [2022-11-03 02:47:59,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:59,693 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1258 transitions. [2022-11-03 02:47:59,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:47:59,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:59,697 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:47:59,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-03 02:47:59,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:59,911 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:59,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:59,911 INFO L85 PathProgramCache]: Analyzing trace with hash 244880147, now seen corresponding path program 1 times [2022-11-03 02:47:59,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:59,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585507097] [2022-11-03 02:47:59,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:59,913 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:59,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:59,914 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:59,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-03 02:48:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:00,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:48:00,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:01,193 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:01,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:48:01,193 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:01,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585507097] [2022-11-03 02:48:01,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585507097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:01,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:01,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:48:01,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509444799] [2022-11-03 02:48:01,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:01,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:48:01,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:01,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:48:01,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:48:01,200 INFO L87 Difference]: Start difference. First operand 929 states and 1258 transitions. Second operand has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:01,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:01,405 INFO L93 Difference]: Finished difference Result 1732 states and 2380 transitions. [2022-11-03 02:48:01,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:48:01,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:48:01,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:01,407 INFO L225 Difference]: With dead ends: 1732 [2022-11-03 02:48:01,407 INFO L226 Difference]: Without dead ends: 1375 [2022-11-03 02:48:01,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:48:01,409 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 712 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 2628 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:01,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 2628 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 49 Unchecked, 0.2s Time] [2022-11-03 02:48:01,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2022-11-03 02:48:01,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 957. [2022-11-03 02:48:01,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 1.356694560669456) internal successors, (1297), 956 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:01,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1297 transitions. [2022-11-03 02:48:01,435 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1297 transitions. Word has length 364 [2022-11-03 02:48:01,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:01,435 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 1297 transitions. [2022-11-03 02:48:01,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:01,436 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1297 transitions. [2022-11-03 02:48:01,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:48:01,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:01,439 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:48:01,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-11-03 02:48:01,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:01,664 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:01,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:01,665 INFO L85 PathProgramCache]: Analyzing trace with hash 528865685, now seen corresponding path program 1 times [2022-11-03 02:48:01,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:01,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187804923] [2022-11-03 02:48:01,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:01,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:01,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:01,669 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:01,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-03 02:48:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:02,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-03 02:48:02,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:08,060 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:08,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:48:08,061 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:08,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187804923] [2022-11-03 02:48:08,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187804923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:08,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:08,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-03 02:48:08,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137119411] [2022-11-03 02:48:08,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:08,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-03 02:48:08,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:08,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-03 02:48:08,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-11-03 02:48:08,063 INFO L87 Difference]: Start difference. First operand 957 states and 1297 transitions. Second operand has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:08,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:08,111 INFO L93 Difference]: Finished difference Result 1362 states and 1858 transitions. [2022-11-03 02:48:08,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:48:08,113 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:48:08,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:08,115 INFO L225 Difference]: With dead ends: 1362 [2022-11-03 02:48:08,115 INFO L226 Difference]: Without dead ends: 1005 [2022-11-03 02:48:08,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-11-03 02:48:08,116 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 231 mSDsluCounter, 5337 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 5640 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 206 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:08,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 5640 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 206 Unchecked, 0.0s Time] [2022-11-03 02:48:08,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2022-11-03 02:48:08,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 1001. [2022-11-03 02:48:08,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 1000 states have (on average 1.357) internal successors, (1357), 1000 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:08,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1357 transitions. [2022-11-03 02:48:08,147 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1357 transitions. Word has length 364 [2022-11-03 02:48:08,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:08,148 INFO L495 AbstractCegarLoop]: Abstraction has 1001 states and 1357 transitions. [2022-11-03 02:48:08,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:08,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1357 transitions. [2022-11-03 02:48:08,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:48:08,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:08,152 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:48:08,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:08,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:08,375 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:08,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:08,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1551717993, now seen corresponding path program 1 times [2022-11-03 02:48:08,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:08,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [264127114] [2022-11-03 02:48:08,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:08,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:08,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:08,378 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:08,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-03 02:48:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:09,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:48:09,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:09,771 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:09,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:48:09,772 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:09,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [264127114] [2022-11-03 02:48:09,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [264127114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:09,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:09,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:48:09,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507477572] [2022-11-03 02:48:09,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:09,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:48:09,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:09,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:48:09,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:48:09,774 INFO L87 Difference]: Start difference. First operand 1001 states and 1357 transitions. Second operand has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:09,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:09,970 INFO L93 Difference]: Finished difference Result 1782 states and 2447 transitions. [2022-11-03 02:48:09,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:48:09,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:48:09,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:09,973 INFO L225 Difference]: With dead ends: 1782 [2022-11-03 02:48:09,973 INFO L226 Difference]: Without dead ends: 1425 [2022-11-03 02:48:09,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:48:09,974 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 680 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:09,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 2419 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 30 Unchecked, 0.1s Time] [2022-11-03 02:48:09,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2022-11-03 02:48:09,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1019. [2022-11-03 02:48:09,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 1018 states have (on average 1.3575638506876229) internal successors, (1382), 1018 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:09,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1382 transitions. [2022-11-03 02:48:09,992 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1382 transitions. Word has length 364 [2022-11-03 02:48:09,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:09,993 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1382 transitions. [2022-11-03 02:48:09,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:09,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1382 transitions. [2022-11-03 02:48:09,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:48:09,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:09,997 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:48:10,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:10,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:10,219 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:10,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:10,219 INFO L85 PathProgramCache]: Analyzing trace with hash -648797415, now seen corresponding path program 1 times [2022-11-03 02:48:10,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:10,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103587122] [2022-11-03 02:48:10,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:10,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:10,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:10,223 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:10,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-03 02:48:11,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:11,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:48:11,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:11,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:48:11,353 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:11,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103587122] [2022-11-03 02:48:11,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103587122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:11,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:11,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:48:11,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998340408] [2022-11-03 02:48:11,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:11,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:48:11,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:11,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:48:11,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:48:11,355 INFO L87 Difference]: Start difference. First operand 1019 states and 1382 transitions. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:11,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:11,542 INFO L93 Difference]: Finished difference Result 1405 states and 1919 transitions. [2022-11-03 02:48:11,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:48:11,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:48:11,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:11,544 INFO L225 Difference]: With dead ends: 1405 [2022-11-03 02:48:11,544 INFO L226 Difference]: Without dead ends: 1048 [2022-11-03 02:48:11,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:48:11,545 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 493 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:11,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 782 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:48:11,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2022-11-03 02:48:11,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1019. [2022-11-03 02:48:11,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 1018 states have (on average 1.356581532416503) internal successors, (1381), 1018 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:11,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1381 transitions. [2022-11-03 02:48:11,568 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1381 transitions. Word has length 364 [2022-11-03 02:48:11,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:11,569 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1381 transitions. [2022-11-03 02:48:11,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:11,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1381 transitions. [2022-11-03 02:48:11,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:48:11,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:11,573 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:48:11,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2022-11-03 02:48:11,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:11,795 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:11,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:11,795 INFO L85 PathProgramCache]: Analyzing trace with hash -656796389, now seen corresponding path program 1 times [2022-11-03 02:48:11,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:11,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293553403] [2022-11-03 02:48:11,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:11,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:11,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:11,798 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:11,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-03 02:48:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:12,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:48:12,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:13,246 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:13,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:48:13,246 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:13,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293553403] [2022-11-03 02:48:13,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293553403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:13,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:13,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:48:13,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296190050] [2022-11-03 02:48:13,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:13,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:48:13,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:13,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:48:13,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:48:13,248 INFO L87 Difference]: Start difference. First operand 1019 states and 1381 transitions. Second operand has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:13,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:13,552 INFO L93 Difference]: Finished difference Result 1764 states and 2414 transitions. [2022-11-03 02:48:13,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:48:13,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:48:13,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:13,556 INFO L225 Difference]: With dead ends: 1764 [2022-11-03 02:48:13,556 INFO L226 Difference]: Without dead ends: 1407 [2022-11-03 02:48:13,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:48:13,557 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 815 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:13,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 1527 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:48:13,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2022-11-03 02:48:13,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1051. [2022-11-03 02:48:13,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 1.3571428571428572) internal successors, (1425), 1050 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:13,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1425 transitions. [2022-11-03 02:48:13,584 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1425 transitions. Word has length 364 [2022-11-03 02:48:13,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:13,584 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1425 transitions. [2022-11-03 02:48:13,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:13,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1425 transitions. [2022-11-03 02:48:13,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:48:13,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:13,588 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:48:13,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:13,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:13,803 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:13,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:13,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1814328679, now seen corresponding path program 1 times [2022-11-03 02:48:13,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:13,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339347139] [2022-11-03 02:48:13,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:13,807 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:13,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:13,808 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:13,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-03 02:48:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:14,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:48:14,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:15,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:48:15,282 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:15,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339347139] [2022-11-03 02:48:15,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339347139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:15,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:15,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:48:15,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914711168] [2022-11-03 02:48:15,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:15,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:48:15,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:15,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:48:15,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:48:15,284 INFO L87 Difference]: Start difference. First operand 1051 states and 1425 transitions. Second operand has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:15,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:15,553 INFO L93 Difference]: Finished difference Result 1814 states and 2485 transitions. [2022-11-03 02:48:15,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:48:15,553 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:48:15,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:15,556 INFO L225 Difference]: With dead ends: 1814 [2022-11-03 02:48:15,556 INFO L226 Difference]: Without dead ends: 1457 [2022-11-03 02:48:15,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:48:15,558 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 576 mSDsluCounter, 2276 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:15,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 2869 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 31 Unchecked, 0.2s Time] [2022-11-03 02:48:15,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2022-11-03 02:48:15,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1061. [2022-11-03 02:48:15,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1060 states have (on average 1.3556603773584905) internal successors, (1437), 1060 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:15,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1437 transitions. [2022-11-03 02:48:15,579 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1437 transitions. Word has length 364 [2022-11-03 02:48:15,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:15,579 INFO L495 AbstractCegarLoop]: Abstraction has 1061 states and 1437 transitions. [2022-11-03 02:48:15,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:15,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1437 transitions. [2022-11-03 02:48:15,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:48:15,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:15,583 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:48:15,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2022-11-03 02:48:15,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:15,799 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:15,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:15,799 INFO L85 PathProgramCache]: Analyzing trace with hash -215179621, now seen corresponding path program 1 times [2022-11-03 02:48:15,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:15,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678783286] [2022-11-03 02:48:15,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:15,801 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:15,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:15,802 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:15,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-03 02:48:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:16,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:48:16,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:16,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:48:16,970 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:16,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678783286] [2022-11-03 02:48:16,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678783286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:16,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:16,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:48:16,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61647276] [2022-11-03 02:48:16,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:16,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:48:16,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:16,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:48:16,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:48:16,971 INFO L87 Difference]: Start difference. First operand 1061 states and 1437 transitions. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:17,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:17,159 INFO L93 Difference]: Finished difference Result 1425 states and 1942 transitions. [2022-11-03 02:48:17,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:48:17,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:48:17,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:17,162 INFO L225 Difference]: With dead ends: 1425 [2022-11-03 02:48:17,163 INFO L226 Difference]: Without dead ends: 1068 [2022-11-03 02:48:17,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:48:17,164 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 481 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:17,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 803 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:48:17,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-11-03 02:48:17,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1061. [2022-11-03 02:48:17,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1060 states have (on average 1.3547169811320754) internal successors, (1436), 1060 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:17,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1436 transitions. [2022-11-03 02:48:17,189 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1436 transitions. Word has length 364 [2022-11-03 02:48:17,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:17,190 INFO L495 AbstractCegarLoop]: Abstraction has 1061 states and 1436 transitions. [2022-11-03 02:48:17,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:17,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1436 transitions. [2022-11-03 02:48:17,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:48:17,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:17,193 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:48:17,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:17,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:17,407 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:17,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:17,407 INFO L85 PathProgramCache]: Analyzing trace with hash -195638499, now seen corresponding path program 1 times [2022-11-03 02:48:17,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:17,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442016268] [2022-11-03 02:48:17,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:17,410 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:17,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:17,414 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:17,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-03 02:48:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:18,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:48:18,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:19,082 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:19,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:48:19,082 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:19,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442016268] [2022-11-03 02:48:19,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442016268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:19,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:19,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:48:19,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703365598] [2022-11-03 02:48:19,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:19,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:48:19,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:19,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:48:19,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:48:19,084 INFO L87 Difference]: Start difference. First operand 1061 states and 1436 transitions. Second operand has 6 states, 6 states have (on average 60.666666666666664) internal successors, (364), 6 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:19,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:19,485 INFO L93 Difference]: Finished difference Result 1788 states and 2441 transitions. [2022-11-03 02:48:19,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:48:19,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 60.666666666666664) internal successors, (364), 6 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:48:19,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:19,487 INFO L225 Difference]: With dead ends: 1788 [2022-11-03 02:48:19,487 INFO L226 Difference]: Without dead ends: 1431 [2022-11-03 02:48:19,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:48:19,488 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 1192 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:19,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 1983 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:48:19,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2022-11-03 02:48:19,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1063. [2022-11-03 02:48:19,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 1.3540489642184557) internal successors, (1438), 1062 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:19,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1438 transitions. [2022-11-03 02:48:19,505 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1438 transitions. Word has length 364 [2022-11-03 02:48:19,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:19,505 INFO L495 AbstractCegarLoop]: Abstraction has 1063 states and 1438 transitions. [2022-11-03 02:48:19,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.666666666666664) internal successors, (364), 6 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:19,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1438 transitions. [2022-11-03 02:48:19,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:48:19,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:19,508 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:48:19,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Ended with exit code 0 [2022-11-03 02:48:19,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:19,708 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:19,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:19,709 INFO L85 PathProgramCache]: Analyzing trace with hash -105578209, now seen corresponding path program 1 times [2022-11-03 02:48:19,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:19,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039599070] [2022-11-03 02:48:19,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:19,711 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:19,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:19,711 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:19,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-03 02:48:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:20,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-03 02:48:20,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:26,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:48:26,642 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:26,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039599070] [2022-11-03 02:48:26,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039599070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:26,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:26,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-03 02:48:26,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695205175] [2022-11-03 02:48:26,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:26,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-03 02:48:26,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:26,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-03 02:48:26,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-11-03 02:48:26,644 INFO L87 Difference]: Start difference. First operand 1063 states and 1438 transitions. Second operand has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:27,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:27,035 INFO L93 Difference]: Finished difference Result 2490 states and 3375 transitions. [2022-11-03 02:48:27,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 02:48:27,037 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:48:27,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:27,039 INFO L225 Difference]: With dead ends: 2490 [2022-11-03 02:48:27,039 INFO L226 Difference]: Without dead ends: 2131 [2022-11-03 02:48:27,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-11-03 02:48:27,040 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 1554 mSDsluCounter, 7445 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 7892 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 513 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:27,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1554 Valid, 7892 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 513 Unchecked, 0.2s Time] [2022-11-03 02:48:27,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2022-11-03 02:48:27,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 1111. [2022-11-03 02:48:27,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 1.3522522522522522) internal successors, (1501), 1110 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:27,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1501 transitions. [2022-11-03 02:48:27,071 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1501 transitions. Word has length 364 [2022-11-03 02:48:27,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:27,071 INFO L495 AbstractCegarLoop]: Abstraction has 1111 states and 1501 transitions. [2022-11-03 02:48:27,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:27,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1501 transitions. [2022-11-03 02:48:27,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:48:27,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:27,075 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:48:27,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:27,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:27,293 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:27,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:27,294 INFO L85 PathProgramCache]: Analyzing trace with hash 392978593, now seen corresponding path program 1 times [2022-11-03 02:48:27,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:27,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037323563] [2022-11-03 02:48:27,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:27,296 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:27,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:27,298 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:27,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-03 02:48:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:28,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:48:28,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:29,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:48:29,120 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:29,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037323563] [2022-11-03 02:48:29,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037323563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:29,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:29,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:48:29,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717603774] [2022-11-03 02:48:29,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:29,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:48:29,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:29,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:48:29,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:48:29,122 INFO L87 Difference]: Start difference. First operand 1111 states and 1501 transitions. Second operand has 8 states, 8 states have (on average 45.5) internal successors, (364), 8 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:29,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:29,796 INFO L93 Difference]: Finished difference Result 2213 states and 3022 transitions. [2022-11-03 02:48:29,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 02:48:29,796 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 45.5) internal successors, (364), 8 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:48:29,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:29,798 INFO L225 Difference]: With dead ends: 2213 [2022-11-03 02:48:29,798 INFO L226 Difference]: Without dead ends: 1854 [2022-11-03 02:48:29,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 02:48:29,800 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 2176 mSDsluCounter, 3183 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2176 SdHoareTripleChecker+Valid, 3766 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:29,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2176 Valid, 3766 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:48:29,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2022-11-03 02:48:29,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1125. [2022-11-03 02:48:29,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 1124 states have (on average 1.3523131672597866) internal successors, (1520), 1124 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:29,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1520 transitions. [2022-11-03 02:48:29,818 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1520 transitions. Word has length 364 [2022-11-03 02:48:29,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:29,818 INFO L495 AbstractCegarLoop]: Abstraction has 1125 states and 1520 transitions. [2022-11-03 02:48:29,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 45.5) internal successors, (364), 8 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:29,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1520 transitions. [2022-11-03 02:48:29,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:48:29,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:29,821 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:48:29,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2022-11-03 02:48:30,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:30,021 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:30,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:30,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1796847779, now seen corresponding path program 1 times [2022-11-03 02:48:30,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:30,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885797358] [2022-11-03 02:48:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:30,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:30,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:30,025 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:30,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-03 02:48:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:30,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:48:31,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:31,434 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:31,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:48:31,434 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:31,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885797358] [2022-11-03 02:48:31,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885797358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:31,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:31,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:48:31,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484798285] [2022-11-03 02:48:31,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:31,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:48:31,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:31,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:48:31,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:48:31,437 INFO L87 Difference]: Start difference. First operand 1125 states and 1520 transitions. Second operand has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:31,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:31,668 INFO L93 Difference]: Finished difference Result 1930 states and 2632 transitions. [2022-11-03 02:48:31,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:48:31,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:48:31,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:31,670 INFO L225 Difference]: With dead ends: 1930 [2022-11-03 02:48:31,670 INFO L226 Difference]: Without dead ends: 1563 [2022-11-03 02:48:31,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:48:31,671 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 543 mSDsluCounter, 2598 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:31,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 3219 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 49 Unchecked, 0.2s Time] [2022-11-03 02:48:31,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2022-11-03 02:48:31,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1177. [2022-11-03 02:48:31,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1176 states have (on average 1.3520408163265305) internal successors, (1590), 1176 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:31,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1590 transitions. [2022-11-03 02:48:31,689 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1590 transitions. Word has length 364 [2022-11-03 02:48:31,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:31,690 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1590 transitions. [2022-11-03 02:48:31,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:31,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1590 transitions. [2022-11-03 02:48:31,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:48:31,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:31,694 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:48:31,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:31,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:31,920 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:31,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:31,921 INFO L85 PathProgramCache]: Analyzing trace with hash 2141675941, now seen corresponding path program 1 times [2022-11-03 02:48:31,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:31,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780401881] [2022-11-03 02:48:31,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:31,923 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:31,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:31,924 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:31,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-03 02:48:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:32,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:48:32,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:33,182 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:33,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:48:33,183 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:33,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780401881] [2022-11-03 02:48:33,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780401881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:33,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:33,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:48:33,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002850041] [2022-11-03 02:48:33,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:33,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:48:33,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:33,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:48:33,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:48:33,185 INFO L87 Difference]: Start difference. First operand 1177 states and 1590 transitions. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:33,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:33,420 INFO L93 Difference]: Finished difference Result 1581 states and 2149 transitions. [2022-11-03 02:48:33,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:48:33,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:48:33,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:33,422 INFO L225 Difference]: With dead ends: 1581 [2022-11-03 02:48:33,423 INFO L226 Difference]: Without dead ends: 1214 [2022-11-03 02:48:33,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:48:33,424 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 459 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:33,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 858 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:48:33,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2022-11-03 02:48:33,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1177. [2022-11-03 02:48:33,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1176 states have (on average 1.3511904761904763) internal successors, (1589), 1176 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:33,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1589 transitions. [2022-11-03 02:48:33,451 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1589 transitions. Word has length 364 [2022-11-03 02:48:33,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:33,451 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1589 transitions. [2022-11-03 02:48:33,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:33,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1589 transitions. [2022-11-03 02:48:33,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:48:33,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:33,455 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:48:33,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:33,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:33,671 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:33,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:33,671 INFO L85 PathProgramCache]: Analyzing trace with hash 372204327, now seen corresponding path program 1 times [2022-11-03 02:48:33,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:33,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145272453] [2022-11-03 02:48:33,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:33,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:33,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:33,675 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:33,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-03 02:48:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:34,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-03 02:48:34,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:40,501 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:40,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:48:40,502 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:40,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145272453] [2022-11-03 02:48:40,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145272453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:40,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:40,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-03 02:48:40,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399372341] [2022-11-03 02:48:40,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:40,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-03 02:48:40,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:40,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-03 02:48:40,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-11-03 02:48:40,505 INFO L87 Difference]: Start difference. First operand 1177 states and 1589 transitions. Second operand has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:40,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:40,595 INFO L93 Difference]: Finished difference Result 1572 states and 2131 transitions. [2022-11-03 02:48:40,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:48:40,604 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:48:40,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:40,605 INFO L225 Difference]: With dead ends: 1572 [2022-11-03 02:48:40,605 INFO L226 Difference]: Without dead ends: 1205 [2022-11-03 02:48:40,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-11-03 02:48:40,606 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 346 mSDsluCounter, 5001 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 5300 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 301 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:40,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 5300 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 301 Unchecked, 0.1s Time] [2022-11-03 02:48:40,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2022-11-03 02:48:40,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1201. [2022-11-03 02:48:40,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1200 states have (on average 1.35) internal successors, (1620), 1200 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:40,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1620 transitions. [2022-11-03 02:48:40,625 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1620 transitions. Word has length 364 [2022-11-03 02:48:40,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:40,626 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 1620 transitions. [2022-11-03 02:48:40,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:40,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1620 transitions. [2022-11-03 02:48:40,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:48:40,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:40,628 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:48:40,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:40,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:40,828 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:40,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:40,829 INFO L85 PathProgramCache]: Analyzing trace with hash 758066729, now seen corresponding path program 1 times [2022-11-03 02:48:40,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:40,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950167963] [2022-11-03 02:48:40,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:40,831 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:40,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:40,832 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:40,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-03 02:48:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:41,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:48:41,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:42,565 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:42,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:48:42,566 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:42,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950167963] [2022-11-03 02:48:42,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950167963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:42,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:42,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:48:42,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110190673] [2022-11-03 02:48:42,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:42,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:48:42,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:42,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:48:42,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:48:42,570 INFO L87 Difference]: Start difference. First operand 1201 states and 1620 transitions. Second operand has 8 states, 8 states have (on average 45.5) internal successors, (364), 8 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:43,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:43,343 INFO L93 Difference]: Finished difference Result 2331 states and 3174 transitions. [2022-11-03 02:48:43,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 02:48:43,344 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 45.5) internal successors, (364), 8 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:48:43,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:43,346 INFO L225 Difference]: With dead ends: 2331 [2022-11-03 02:48:43,346 INFO L226 Difference]: Without dead ends: 1964 [2022-11-03 02:48:43,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 02:48:43,347 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 2149 mSDsluCounter, 3193 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2149 SdHoareTripleChecker+Valid, 3793 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:43,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2149 Valid, 3793 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:48:43,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2022-11-03 02:48:43,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1235. [2022-11-03 02:48:43,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 1234 states have (on average 1.3492706645056727) internal successors, (1665), 1234 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:43,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1665 transitions. [2022-11-03 02:48:43,367 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1665 transitions. Word has length 364 [2022-11-03 02:48:43,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:43,368 INFO L495 AbstractCegarLoop]: Abstraction has 1235 states and 1665 transitions. [2022-11-03 02:48:43,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 45.5) internal successors, (364), 8 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:43,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1665 transitions. [2022-11-03 02:48:43,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:48:43,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:43,370 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:48:43,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2022-11-03 02:48:43,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:43,571 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:43,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:43,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1605774933, now seen corresponding path program 1 times [2022-11-03 02:48:43,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:43,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714483764] [2022-11-03 02:48:43,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:43,574 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:43,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:43,575 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:43,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-03 02:48:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:44,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:48:44,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:45,035 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:45,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:48:45,035 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:45,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714483764] [2022-11-03 02:48:45,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714483764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:45,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:45,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:48:45,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824102518] [2022-11-03 02:48:45,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:45,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:48:45,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:45,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:48:45,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:48:45,037 INFO L87 Difference]: Start difference. First operand 1235 states and 1665 transitions. Second operand has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:45,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:45,264 INFO L93 Difference]: Finished difference Result 2042 states and 2774 transitions. [2022-11-03 02:48:45,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:48:45,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:48:45,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:45,266 INFO L225 Difference]: With dead ends: 2042 [2022-11-03 02:48:45,266 INFO L226 Difference]: Without dead ends: 1661 [2022-11-03 02:48:45,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:48:45,267 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 553 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 2840 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:45,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 2840 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2022-11-03 02:48:45,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2022-11-03 02:48:45,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1275. [2022-11-03 02:48:45,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1274 states have (on average 1.347723704866562) internal successors, (1717), 1274 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:45,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1717 transitions. [2022-11-03 02:48:45,299 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1717 transitions. Word has length 364 [2022-11-03 02:48:45,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:45,300 INFO L495 AbstractCegarLoop]: Abstraction has 1275 states and 1717 transitions. [2022-11-03 02:48:45,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:45,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1717 transitions. [2022-11-03 02:48:45,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:48:45,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:45,304 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:48:45,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:45,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:45,533 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:45,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:45,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1179220435, now seen corresponding path program 1 times [2022-11-03 02:48:45,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:45,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746690358] [2022-11-03 02:48:45,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:45,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:45,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:45,537 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:45,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-03 02:48:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:46,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:48:46,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:46,833 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:46,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:48:46,834 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:46,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746690358] [2022-11-03 02:48:46,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746690358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:46,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:46,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:48:46,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021508925] [2022-11-03 02:48:46,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:46,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:48:46,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:46,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:48:46,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:48:46,835 INFO L87 Difference]: Start difference. First operand 1275 states and 1717 transitions. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:47,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:47,060 INFO L93 Difference]: Finished difference Result 1721 states and 2333 transitions. [2022-11-03 02:48:47,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:48:47,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:48:47,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:47,062 INFO L225 Difference]: With dead ends: 1721 [2022-11-03 02:48:47,062 INFO L226 Difference]: Without dead ends: 1340 [2022-11-03 02:48:47,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:48:47,063 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 443 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:47,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 895 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:48:47,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2022-11-03 02:48:47,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1275. [2022-11-03 02:48:47,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1274 states have (on average 1.346938775510204) internal successors, (1716), 1274 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:47,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1716 transitions. [2022-11-03 02:48:47,083 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1716 transitions. Word has length 364 [2022-11-03 02:48:47,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:47,083 INFO L495 AbstractCegarLoop]: Abstraction has 1275 states and 1716 transitions. [2022-11-03 02:48:47,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:47,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1716 transitions. [2022-11-03 02:48:47,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:48:47,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:47,085 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:48:47,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Ended with exit code 0 [2022-11-03 02:48:47,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:47,287 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:47,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:47,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1335200977, now seen corresponding path program 1 times [2022-11-03 02:48:47,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:47,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397747757] [2022-11-03 02:48:47,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:47,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:47,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:47,290 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:47,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-03 02:48:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:48,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:48:48,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:49,004 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 116 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:49,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:48:49,532 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 116 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:49,532 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:49,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397747757] [2022-11-03 02:48:49,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397747757] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:48:49,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2107351024] [2022-11-03 02:48:49,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:49,533 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:48:49,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:48:49,538 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:48:49,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (61)] Waiting until timeout for monitored process [2022-11-03 02:48:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:51,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:48:51,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:51,420 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:48:51,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:48:51,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2107351024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:51,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:48:51,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 14 [2022-11-03 02:48:51,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048269759] [2022-11-03 02:48:51,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:51,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:48:51,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:51,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:48:51,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:48:51,422 INFO L87 Difference]: Start difference. First operand 1275 states and 1716 transitions. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:51,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:51,624 INFO L93 Difference]: Finished difference Result 2934 states and 3984 transitions. [2022-11-03 02:48:51,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:48:51,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:48:51,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:51,627 INFO L225 Difference]: With dead ends: 2934 [2022-11-03 02:48:51,628 INFO L226 Difference]: Without dead ends: 2553 [2022-11-03 02:48:51,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1095 GetRequests, 1080 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:48:51,629 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 994 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:51,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 2107 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:48:51,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2022-11-03 02:48:51,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 1479. [2022-11-03 02:48:51,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1478 states have (on average 1.3497970230040595) internal successors, (1995), 1478 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:51,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 1995 transitions. [2022-11-03 02:48:51,668 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 1995 transitions. Word has length 364 [2022-11-03 02:48:51,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:51,669 INFO L495 AbstractCegarLoop]: Abstraction has 1479 states and 1995 transitions. [2022-11-03 02:48:51,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:51,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 1995 transitions. [2022-11-03 02:48:51,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:48:51,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:51,673 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:48:51,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (61)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:51,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2022-11-03 02:48:52,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:52,100 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:52,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:52,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1593366415, now seen corresponding path program 1 times [2022-11-03 02:48:52,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:52,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210904880] [2022-11-03 02:48:52,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:52,103 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:52,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:52,103 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:52,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-03 02:48:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:53,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:48:53,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:53,824 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 116 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:53,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:48:54,372 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 116 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:54,372 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:54,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210904880] [2022-11-03 02:48:54,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210904880] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:48:54,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [398491924] [2022-11-03 02:48:54,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:54,373 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:48:54,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:48:54,374 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:48:54,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2022-11-03 02:48:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:56,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:48:56,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:57,349 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 116 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:57,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:48:57,826 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 116 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:57,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [398491924] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:48:57,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135605336] [2022-11-03 02:48:57,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:57,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:48:57,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:48:57,828 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:48:57,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-11-03 02:48:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:58,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:48:58,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 116 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:59,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:48:59,822 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 116 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:59,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135605336] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:48:59,822 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:48:59,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 11 [2022-11-03 02:48:59,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883845896] [2022-11-03 02:48:59,823 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:48:59,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:48:59,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:59,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:48:59,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:48:59,826 INFO L87 Difference]: Start difference. First operand 1479 states and 1995 transitions. Second operand has 11 states, 11 states have (on average 47.45454545454545) internal successors, (522), 11 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:49:00,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:49:00,751 INFO L93 Difference]: Finished difference Result 3217 states and 4377 transitions. [2022-11-03 02:49:00,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:49:00,752 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 47.45454545454545) internal successors, (522), 11 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:49:00,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:49:00,753 INFO L225 Difference]: With dead ends: 3217 [2022-11-03 02:49:00,753 INFO L226 Difference]: Without dead ends: 2632 [2022-11-03 02:49:00,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2191 GetRequests, 2169 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:49:00,754 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 4519 mSDsluCounter, 2222 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4519 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:49:00,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4519 Valid, 2709 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:49:00,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2022-11-03 02:49:00,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 1890. [2022-11-03 02:49:00,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1890 states, 1889 states have (on average 1.3488618316569614) internal successors, (2548), 1889 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:49:00,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 2548 transitions. [2022-11-03 02:49:00,782 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 2548 transitions. Word has length 364 [2022-11-03 02:49:00,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:49:00,782 INFO L495 AbstractCegarLoop]: Abstraction has 1890 states and 2548 transitions. [2022-11-03 02:49:00,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 47.45454545454545) internal successors, (522), 11 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:49:00,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 2548 transitions. [2022-11-03 02:49:00,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:49:00,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:49:00,785 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:49:00,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (63)] Forceful destruction successful, exit code 0 [2022-11-03 02:49:01,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Ended with exit code 0 [2022-11-03 02:49:01,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-11-03 02:49:01,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:49:01,386 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:49:01,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:49:01,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1117290605, now seen corresponding path program 1 times [2022-11-03 02:49:01,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:49:01,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900652983] [2022-11-03 02:49:01,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:01,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:49:01,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:49:01,393 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:49:01,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-03 02:49:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:02,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:49:02,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:49:02,991 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 114 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:49:02,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:49:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 114 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:49:03,484 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:49:03,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900652983] [2022-11-03 02:49:03,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900652983] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:49:03,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [573279357] [2022-11-03 02:49:03,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:03,486 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:49:03,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:49:03,487 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:49:03,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (66)] Waiting until timeout for monitored process [2022-11-03 02:49:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:05,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:49:05,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:49:05,105 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:49:05,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:49:05,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [573279357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:49:05,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:49:05,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 12 [2022-11-03 02:49:05,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137379067] [2022-11-03 02:49:05,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:49:05,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:49:05,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:49:05,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:49:05,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:49:05,107 INFO L87 Difference]: Start difference. First operand 1890 states and 2548 transitions. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:49:05,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:49:05,265 INFO L93 Difference]: Finished difference Result 3358 states and 4566 transitions. [2022-11-03 02:49:05,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:49:05,265 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:49:05,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:49:05,267 INFO L225 Difference]: With dead ends: 3358 [2022-11-03 02:49:05,267 INFO L226 Difference]: Without dead ends: 2634 [2022-11-03 02:49:05,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1094 GetRequests, 1081 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:49:05,269 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 1561 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:49:05,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1561 Valid, 1346 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:49:05,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2022-11-03 02:49:05,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1890. [2022-11-03 02:49:05,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1890 states, 1889 states have (on average 1.3483324510322923) internal successors, (2547), 1889 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:49:05,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 2547 transitions. [2022-11-03 02:49:05,297 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 2547 transitions. Word has length 364 [2022-11-03 02:49:05,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:49:05,297 INFO L495 AbstractCegarLoop]: Abstraction has 1890 states and 2547 transitions. [2022-11-03 02:49:05,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:49:05,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 2547 transitions. [2022-11-03 02:49:05,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:49:05,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:49:05,302 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:49:05,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2022-11-03 02:49:05,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (66)] Forceful destruction successful, exit code 0 [2022-11-03 02:49:05,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:49:05,715 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:49:05,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:49:05,715 INFO L85 PathProgramCache]: Analyzing trace with hash 784647467, now seen corresponding path program 1 times [2022-11-03 02:49:05,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:49:05,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120699901] [2022-11-03 02:49:05,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:05,717 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:49:05,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:49:05,719 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:49:05,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-03 02:49:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:06,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:49:06,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:49:07,492 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 40 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:49:07,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:49:08,124 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 40 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:49:08,124 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:49:08,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120699901] [2022-11-03 02:49:08,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120699901] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:49:08,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [771298155] [2022-11-03 02:49:08,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:08,125 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:49:08,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:49:08,126 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:49:08,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (68)] Waiting until timeout for monitored process [2022-11-03 02:49:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:09,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:49:09,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:49:09,841 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:49:09,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:49:09,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [771298155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:49:09,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:49:09,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 12 [2022-11-03 02:49:09,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016773830] [2022-11-03 02:49:09,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:49:09,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:49:09,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:49:09,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:49:09,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:49:09,843 INFO L87 Difference]: Start difference. First operand 1890 states and 2547 transitions. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:49:09,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:49:09,998 INFO L93 Difference]: Finished difference Result 3502 states and 4754 transitions. [2022-11-03 02:49:09,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:49:09,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:49:09,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:49:10,001 INFO L225 Difference]: With dead ends: 3502 [2022-11-03 02:49:10,001 INFO L226 Difference]: Without dead ends: 2778 [2022-11-03 02:49:10,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1095 GetRequests, 1082 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:49:10,003 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 1595 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:49:10,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 1345 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:49:10,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2022-11-03 02:49:10,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 1890. [2022-11-03 02:49:10,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1890 states, 1889 states have (on average 1.347273689782954) internal successors, (2545), 1889 states have internal predecessors, (2545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:49:10,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 2545 transitions. [2022-11-03 02:49:10,031 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 2545 transitions. Word has length 364 [2022-11-03 02:49:10,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:49:10,031 INFO L495 AbstractCegarLoop]: Abstraction has 1890 states and 2545 transitions. [2022-11-03 02:49:10,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:49:10,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 2545 transitions. [2022-11-03 02:49:10,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:49:10,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:49:10,035 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:49:10,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (68)] Ended with exit code 0 [2022-11-03 02:49:10,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2022-11-03 02:49:10,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:49:10,436 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:49:10,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:49:10,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1032793961, now seen corresponding path program 1 times [2022-11-03 02:49:10,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:49:10,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819321445] [2022-11-03 02:49:10,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:10,439 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:49:10,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:49:10,440 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:49:10,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-03 02:49:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:11,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:49:11,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:49:12,178 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 32 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:49:12,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:49:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 32 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:49:12,805 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:49:12,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819321445] [2022-11-03 02:49:12,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819321445] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:49:12,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [447396499] [2022-11-03 02:49:12,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:12,805 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:49:12,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:49:12,806 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:49:12,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (70)] Waiting until timeout for monitored process [2022-11-03 02:49:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:14,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:49:14,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:49:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:49:14,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:49:14,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [447396499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:49:14,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:49:14,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 12 [2022-11-03 02:49:14,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981838670] [2022-11-03 02:49:14,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:49:14,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:49:14,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:49:14,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:49:14,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:49:14,536 INFO L87 Difference]: Start difference. First operand 1890 states and 2545 transitions. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:49:14,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:49:14,690 INFO L93 Difference]: Finished difference Result 3518 states and 4772 transitions. [2022-11-03 02:49:14,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:49:14,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-03 02:49:14,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:49:14,692 INFO L225 Difference]: With dead ends: 3518 [2022-11-03 02:49:14,692 INFO L226 Difference]: Without dead ends: 2794 [2022-11-03 02:49:14,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1095 GetRequests, 1082 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:49:14,693 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 1596 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:49:14,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1596 Valid, 1344 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:49:14,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2022-11-03 02:49:14,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 1890. [2022-11-03 02:49:14,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1890 states, 1889 states have (on average 1.3462149285336156) internal successors, (2543), 1889 states have internal predecessors, (2543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:49:14,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 2543 transitions. [2022-11-03 02:49:14,725 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 2543 transitions. Word has length 364 [2022-11-03 02:49:14,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:49:14,725 INFO L495 AbstractCegarLoop]: Abstraction has 1890 states and 2543 transitions. [2022-11-03 02:49:14,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:49:14,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 2543 transitions. [2022-11-03 02:49:14,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 02:49:14,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:49:14,728 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:49:14,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (70)] Ended with exit code 0 [2022-11-03 02:49:14,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Ended with exit code 0 [2022-11-03 02:49:15,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:49:15,129 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:49:15,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:49:15,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1211189337, now seen corresponding path program 1 times [2022-11-03 02:49:15,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:49:15,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358807958] [2022-11-03 02:49:15,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:15,131 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:49:15,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:49:15,132 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:49:15,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032a8deb-8c24-4574-97b0-25df4a45f9d0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-03 02:49:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:16,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 136 conjunts are in the unsatisfiable core [2022-11-03 02:49:16,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:49:33,985 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 22 proven. 113 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:49:33,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:50:14,413 WARN L234 SmtUtils]: Spent 11.90s on a formula simplification. DAG size of input: 398 DAG size of output: 286 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:50:53,185 WARN L234 SmtUtils]: Spent 18.36s on a formula simplification. DAG size of input: 380 DAG size of output: 266 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:55:40,836 WARN L234 SmtUtils]: Spent 2.45m on a formula simplification. DAG size of input: 594 DAG size of output: 465 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)