./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/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_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/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_28256fe9-bef2-42fb-b2d5-aeb22c03745f/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 407f079cfeef5f20438e38393e8e31b0b38db95f65d747092bdbd6427eef85bc --- 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 04:11:26,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:11:26,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:11:26,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:11:26,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:11:26,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:11:26,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:11:26,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:11:26,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:11:26,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:11:26,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:11:26,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:11:26,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:11:26,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:11:26,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:11:26,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:11:26,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:11:26,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:11:26,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:11:26,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:11:26,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:11:26,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:11:26,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:11:26,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:11:26,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:11:26,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:11:26,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:11:26,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:11:26,637 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:11:26,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:11:26,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:11:26,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:11:26,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:11:26,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:11:26,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:11:26,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:11:26,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:11:26,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:11:26,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:11:26,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:11:26,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:11:26,649 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 04:11:26,677 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:11:26,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:11:26,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:11:26,679 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:11:26,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:11:26,680 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:11:26,680 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:11:26,681 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:11:26,681 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:11:26,681 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:11:26,682 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:11:26,682 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:11:26,682 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:11:26,683 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:11:26,683 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:11:26,683 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:11:26,683 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:11:26,684 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:11:26,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:11:26,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:11:26,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:11:26,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:11:26,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:11:26,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:11:26,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:11:26,687 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:11:26,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:11:26,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:11:26,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:11:26,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:11:26,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:11:26,688 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:11:26,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:11:26,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:11:26,689 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:11:26,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:11:26,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:11:26,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:11:26,690 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_28256fe9-bef2-42fb-b2d5-aeb22c03745f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 407f079cfeef5f20438e38393e8e31b0b38db95f65d747092bdbd6427eef85bc [2022-11-03 04:11:27,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:11:27,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:11:27,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:11:27,096 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:11:27,097 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:11:27,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c [2022-11-03 04:11:27,188 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/data/c778e4441/45974259759345c4b0f9a0c52f6ed2fa/FLAG6fa85e470 [2022-11-03 04:11:28,001 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:11:28,002 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c [2022-11-03 04:11:28,024 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/data/c778e4441/45974259759345c4b0f9a0c52f6ed2fa/FLAG6fa85e470 [2022-11-03 04:11:28,148 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/data/c778e4441/45974259759345c4b0f9a0c52f6ed2fa [2022-11-03 04:11:28,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:11:28,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:11:28,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:11:28,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:11:28,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:11:28,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:11:28" (1/1) ... [2022-11-03 04:11:28,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@355bfe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:28, skipping insertion in model container [2022-11-03 04:11:28,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:11:28" (1/1) ... [2022-11-03 04:11:28,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:11:28,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:11:28,594 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_28256fe9-bef2-42fb-b2d5-aeb22c03745f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c[1107,1120] [2022-11-03 04:11:29,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:11:29,036 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:11:29,049 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_28256fe9-bef2-42fb-b2d5-aeb22c03745f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c[1107,1120] [2022-11-03 04:11:29,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:11:29,321 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:11:29,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29 WrapperNode [2022-11-03 04:11:29,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:11:29,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:11:29,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:11:29,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:11:29,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (1/1) ... [2022-11-03 04:11:29,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (1/1) ... [2022-11-03 04:11:29,553 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1809 [2022-11-03 04:11:29,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:11:29,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:11:29,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:11:29,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:11:29,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (1/1) ... [2022-11-03 04:11:29,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (1/1) ... [2022-11-03 04:11:29,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (1/1) ... [2022-11-03 04:11:29,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (1/1) ... [2022-11-03 04:11:29,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (1/1) ... [2022-11-03 04:11:29,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (1/1) ... [2022-11-03 04:11:29,893 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (1/1) ... [2022-11-03 04:11:29,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (1/1) ... [2022-11-03 04:11:30,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:11:30,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:11:30,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:11:30,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:11:30,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (1/1) ... [2022-11-03 04:11:30,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:11:30,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:11:30,091 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:11:30,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:11:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:11:30,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:11:30,595 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:11:30,598 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:11:37,292 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:11:43,102 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:11:43,102 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 04:11:43,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:11:43 BoogieIcfgContainer [2022-11-03 04:11:43,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:11:43,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:11:43,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:11:43,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:11:43,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:11:28" (1/3) ... [2022-11-03 04:11:43,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1782966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:11:43, skipping insertion in model container [2022-11-03 04:11:43,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (2/3) ... [2022-11-03 04:11:43,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1782966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:11:43, skipping insertion in model container [2022-11-03 04:11:43,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:11:43" (3/3) ... [2022-11-03 04:11:43,120 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal20.c [2022-11-03 04:11:43,145 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:11:43,146 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:11:43,210 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:11:43,219 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;@72a9f18a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:11:43,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:11:43,225 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 04:11:43,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 04:11:43,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:43,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 04:11:43,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:11:43,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:43,242 INFO L85 PathProgramCache]: Analyzing trace with hash 23454700, now seen corresponding path program 1 times [2022-11-03 04:11:43,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:43,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24240882] [2022-11-03 04:11:43,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:43,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:12:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:12:22,042 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 04:12:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:12:52,922 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 04:12:52,925 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 04:12:52,927 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 04:12:52,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:12:52,935 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 04:12:52,940 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 04:12:53,005 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 04:12:53,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:12:53 BoogieIcfgContainer [2022-11-03 04:12:53,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 04:12:53,070 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 04:12:53,072 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 04:12:53,072 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 04:12:53,074 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:11:43" (3/4) ... [2022-11-03 04:12:53,078 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 04:12:53,078 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 04:12:53,081 INFO L158 Benchmark]: Toolchain (without parser) took 84924.14ms. Allocated memory was 96.5MB in the beginning and 3.5GB in the end (delta: 3.4GB). Free memory was 53.4MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2022-11-03 04:12:53,082 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 96.5MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:12:53,084 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1161.05ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 53.1MB in the beginning and 88.6MB in the end (delta: -35.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-03 04:12:53,086 INFO L158 Benchmark]: Boogie Procedure Inliner took 231.07ms. Allocated memory is still 127.9MB. Free memory was 88.6MB in the beginning and 60.7MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-03 04:12:53,090 INFO L158 Benchmark]: Boogie Preprocessor took 461.87ms. Allocated memory is still 127.9MB. Free memory was 60.7MB in the beginning and 75.9MB in the end (delta: -15.2MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. [2022-11-03 04:12:53,092 INFO L158 Benchmark]: RCFGBuilder took 13088.05ms. Allocated memory was 127.9MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 75.8MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 448.2MB. Max. memory is 16.1GB. [2022-11-03 04:12:53,094 INFO L158 Benchmark]: TraceAbstraction took 69960.49ms. Allocated memory was 1.5GB in the beginning and 3.5GB in the end (delta: 2.0GB). Free memory was 1.1GB in the beginning and 1.8GB in the end (delta: -684.1MB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2022-11-03 04:12:53,095 INFO L158 Benchmark]: Witness Printer took 8.23ms. Allocated memory is still 3.5GB. Free memory is still 1.8GB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:12:53,099 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 96.5MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1161.05ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 53.1MB in the beginning and 88.6MB in the end (delta: -35.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 231.07ms. Allocated memory is still 127.9MB. Free memory was 88.6MB in the beginning and 60.7MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 461.87ms. Allocated memory is still 127.9MB. Free memory was 60.7MB in the beginning and 75.9MB in the end (delta: -15.2MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. * RCFGBuilder took 13088.05ms. Allocated memory was 127.9MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 75.8MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 448.2MB. Max. memory is 16.1GB. * TraceAbstraction took 69960.49ms. Allocated memory was 1.5GB in the beginning and 3.5GB in the end (delta: 2.0GB). Free memory was 1.1GB in the beginning and 1.8GB in the end (delta: -684.1MB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. * Witness Printer took 8.23ms. Allocated memory is still 3.5GB. Free memory is still 1.8GB. 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 190, overapproximation of bitwiseAnd at line 156, overapproximation of bitwiseComplement at line 187, overapproximation of bitwiseXOr at line 193. 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_105 mask_SORT_105 = (SORT_105)-1 >> (sizeof(SORT_105) * 8 - 4); [L41] const SORT_105 msb_SORT_105 = (SORT_105)1 << (4 - 1); [L43] const SORT_145 mask_SORT_145 = (SORT_145)-1 >> (sizeof(SORT_145) * 8 - 6); [L44] const SORT_145 msb_SORT_145 = (SORT_145)1 << (6 - 1); [L46] const SORT_147 mask_SORT_147 = (SORT_147)-1 >> (sizeof(SORT_147) * 8 - 7); [L47] const SORT_147 msb_SORT_147 = (SORT_147)1 << (7 - 1); [L49] const SORT_150 mask_SORT_150 = (SORT_150)-1 >> (sizeof(SORT_150) * 8 - 9); [L50] const SORT_150 msb_SORT_150 = (SORT_150)1 << (9 - 1); [L52] const SORT_152 mask_SORT_152 = (SORT_152)-1 >> (sizeof(SORT_152) * 8 - 10); [L53] const SORT_152 msb_SORT_152 = (SORT_152)1 << (10 - 1); [L55] const SORT_154 mask_SORT_154 = (SORT_154)-1 >> (sizeof(SORT_154) * 8 - 11); [L56] const SORT_154 msb_SORT_154 = (SORT_154)1 << (11 - 1); [L58] const SORT_156 mask_SORT_156 = (SORT_156)-1 >> (sizeof(SORT_156) * 8 - 12); [L59] const SORT_156 msb_SORT_156 = (SORT_156)1 << (12 - 1); [L61] const SORT_1 var_27 = 0; [L62] const SORT_17 var_31 = 0; [L63] const SORT_6 var_37 = 0; [L64] const SORT_1 var_45 = 1; [L65] const SORT_8 var_46 = 1; [L66] const SORT_8 var_49 = 3; [L67] const SORT_8 var_52 = 2; [L68] const SORT_8 var_56 = 5; [L69] const SORT_8 var_59 = 7; [L70] const SORT_8 var_62 = 6; [L71] const SORT_8 var_66 = 4; [L72] const SORT_6 var_72 = 2; [L73] const SORT_6 var_74 = 1; [L74] const SORT_6 var_84 = 3; [L75] const SORT_14 var_95 = 11; [L76] const SORT_14 var_97 = 10; [L77] const SORT_14 var_99 = 2; [L78] const SORT_14 var_101 = 9; [L79] const SORT_14 var_117 = 21; [L80] const SORT_14 var_119 = 20; [L81] const SORT_14 var_121 = 19; [L82] const SORT_14 var_123 = 18; [L83] const SORT_14 var_125 = 17; [L84] const SORT_14 var_127 = 16; [L85] const SORT_14 var_129 = 15; [L86] const SORT_14 var_131 = 14; [L87] const SORT_14 var_133 = 8; [L88] const SORT_14 var_135 = 6; [L89] const SORT_14 var_137 = 3; [L90] const SORT_14 var_139 = 5; [L91] const SORT_14 var_159 = 4; [L92] const SORT_14 var_161 = 1; [L93] const SORT_14 var_171 = 7; [L94] const SORT_14 var_189 = 13; [L95] const SORT_14 var_197 = 12; [L96] const SORT_14 var_218 = 23; [L97] const SORT_14 var_221 = 22; [L98] const SORT_14 var_230 = 25; [L99] const SORT_14 var_233 = 27; [L100] const SORT_14 var_236 = 26; [L101] const SORT_14 var_240 = 29; [L102] const SORT_14 var_243 = 31; [L103] const SORT_14 var_246 = 30; [L104] const SORT_14 var_250 = 28; [L105] const SORT_14 var_256 = 24; [L106] const SORT_145 var_279 = 0; [L107] const SORT_17 var_395 = 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_17 input_23; [L127] SORT_17 input_24; [L128] SORT_1 input_25; [L129] SORT_6 input_26; [L131] SORT_1 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L132] SORT_17 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_17; [L133] SORT_1 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L134] SORT_6 state_38 = __VERIFIER_nondet_uchar() & mask_SORT_6; [L135] SORT_17 state_300 = __VERIFIER_nondet_uchar() & mask_SORT_17; [L136] SORT_1 state_314 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L137] SORT_6 state_343 = __VERIFIER_nondet_uchar() & mask_SORT_6; [L139] SORT_1 init_29_arg_1 = var_27; [L140] state_28 = init_29_arg_1 [L141] SORT_17 init_33_arg_1 = var_31; [L142] state_32 = init_33_arg_1 [L143] SORT_1 init_35_arg_1 = var_27; [L144] state_34 = init_35_arg_1 [L145] SORT_6 init_39_arg_1 = var_37; [L146] state_38 = init_39_arg_1 [L147] SORT_17 init_301_arg_1 = var_31; [L148] state_300 = init_301_arg_1 [L149] SORT_1 init_315_arg_1 = var_27; [L150] state_314 = init_315_arg_1 [L151] SORT_6 init_344_arg_1 = var_37; [L152] state_343 = init_344_arg_1 VAL [init_29_arg_1=0, init_301_arg_1=0, init_315_arg_1=0, init_33_arg_1=0, init_344_arg_1=0, init_35_arg_1=0, init_39_arg_1=0, mask_SORT_1=1, mask_SORT_105=15, mask_SORT_14=31, mask_SORT_145=63, mask_SORT_147=127, mask_SORT_150=511, mask_SORT_152=1023, mask_SORT_154=2047, mask_SORT_156=4095, mask_SORT_17=255, mask_SORT_6=3, mask_SORT_8=7, msb_SORT_1=1, msb_SORT_105=8, msb_SORT_14=16, msb_SORT_145=32, msb_SORT_147=64, msb_SORT_150=256, msb_SORT_152=512, msb_SORT_154=1024, msb_SORT_156=2048, msb_SORT_17=128, msb_SORT_6=2, msb_SORT_8=4, state_28=0, state_300=0, state_314=0, state_32=0, state_34=0, state_343=0, state_38=0, var_101=9, var_117=21, var_119=20, var_121=19, var_123=18, var_125=17, var_127=16, var_129=15, var_131=14, var_133=8, var_135=6, var_137=3, var_139=5, var_159=4, var_161=1, var_171=7, var_189=13, var_197=12, var_218=23, var_221=22, var_230=25, var_233=27, var_236=26, var_240=29, var_243=31, var_246=30, var_250=28, var_256=24, var_27=0, var_279=0, var_31=0, var_37=0, var_395=3, var_45=1, var_46=1, var_49=3, var_52=2, var_56=5, var_59=7, var_62=6, var_66=4, var_72=2, var_74=1, var_84=3, var_95=11, var_97=10, var_99=2] [L155] input_2 = __VERIFIER_nondet_uchar() [L156] input_2 = input_2 & mask_SORT_1 [L157] input_3 = __VERIFIER_nondet_uchar() [L158] input_3 = input_3 & mask_SORT_1 [L159] input_4 = __VERIFIER_nondet_uchar() [L160] input_5 = __VERIFIER_nondet_uchar() [L161] input_5 = input_5 & mask_SORT_1 [L162] input_7 = __VERIFIER_nondet_uchar() [L163] input_7 = input_7 & mask_SORT_6 [L164] input_9 = __VERIFIER_nondet_uchar() [L165] input_9 = input_9 & mask_SORT_8 [L166] input_10 = __VERIFIER_nondet_uchar() [L167] input_10 = input_10 & mask_SORT_6 [L168] input_11 = __VERIFIER_nondet_uchar() [L169] input_11 = input_11 & mask_SORT_1 [L170] input_12 = __VERIFIER_nondet_uchar() [L171] input_13 = __VERIFIER_nondet_uchar() [L172] input_15 = __VERIFIER_nondet_uchar() [L173] input_15 = input_15 & mask_SORT_14 [L174] input_16 = __VERIFIER_nondet_uchar() [L175] input_18 = __VERIFIER_nondet_uchar() [L176] input_19 = __VERIFIER_nondet_uchar() [L177] input_20 = __VERIFIER_nondet_uchar() [L178] input_21 = __VERIFIER_nondet_uchar() [L179] input_22 = __VERIFIER_nondet_uchar() [L180] input_23 = __VERIFIER_nondet_uchar() [L181] input_24 = __VERIFIER_nondet_uchar() [L182] input_25 = __VERIFIER_nondet_uchar() [L183] input_26 = __VERIFIER_nondet_uchar() [L186] SORT_1 var_30_arg_0 = state_28; [L187] SORT_1 var_30 = ~var_30_arg_0; [L188] SORT_1 var_81_arg_0 = input_12; [L189] SORT_1 var_81_arg_1 = input_11; [L190] SORT_6 var_81 = ((SORT_6)var_81_arg_0 << 1) | var_81_arg_1; [L191] var_81 = var_81 & mask_SORT_6 [L192] SORT_6 var_82_arg_0 = var_81; [L193] var_82_arg_0 ^= var_82_arg_0 >> 4 [L194] var_82_arg_0 ^= var_82_arg_0 >> 2 [L195] var_82_arg_0 ^= var_82_arg_0 >> 1 [L196] SORT_1 var_82 = var_82_arg_0; [L197] SORT_8 var_287_arg_0 = input_9; [L198] SORT_8 var_287_arg_1 = var_52; [L199] SORT_1 var_287 = var_287_arg_0 == var_287_arg_1; [L200] SORT_8 var_286_arg_0 = input_9; [L201] SORT_8 var_286_arg_1 = var_46; [L202] SORT_1 var_286 = var_286_arg_0 == var_286_arg_1; [L203] SORT_8 var_285_arg_0 = input_9; [L204] SORT_8 var_285_arg_1 = var_66; [L205] SORT_1 var_285 = var_285_arg_0 == var_285_arg_1; [L206] SORT_8 var_284_arg_0 = input_9; [L207] SORT_8 var_284_arg_1 = var_56; [L208] SORT_1 var_284 = var_284_arg_0 == var_284_arg_1; [L209] SORT_1 var_288_arg_0 = var_285; [L210] SORT_1 var_288_arg_1 = var_284; [L211] SORT_6 var_288 = ((SORT_6)var_288_arg_0 << 1) | var_288_arg_1; [L212] var_288 = var_288 & mask_SORT_6 [L213] SORT_1 var_289_arg_0 = var_286; [L214] SORT_6 var_289_arg_1 = var_288; [L215] SORT_8 var_289 = ((SORT_8)var_289_arg_0 << 2) | var_289_arg_1; [L216] var_289 = var_289 & mask_SORT_8 [L217] SORT_1 var_290_arg_0 = var_287; [L218] SORT_8 var_290_arg_1 = var_289; [L219] SORT_105 var_290 = ((SORT_105)var_290_arg_0 << 3) | var_290_arg_1; [L220] var_290 = var_290 & mask_SORT_105 [L221] SORT_105 var_291_arg_0 = var_290; [L222] SORT_1 var_291 = var_291_arg_0 != 0; [L223] SORT_6 var_75_arg_0 = input_10; [L224] SORT_6 var_75_arg_1 = var_74; [L225] SORT_1 var_75 = var_75_arg_0 == var_75_arg_1; [L226] SORT_8 var_63_arg_0 = input_9; [L227] SORT_8 var_63_arg_1 = var_62; [L228] SORT_1 var_63 = var_63_arg_0 == var_63_arg_1; [L229] SORT_8 var_60_arg_0 = input_9; [L230] SORT_8 var_60_arg_1 = var_59; [L231] SORT_1 var_60 = var_60_arg_0 == var_60_arg_1; [L232] SORT_1 var_64_arg_0 = var_63; [L233] SORT_1 var_64_arg_1 = var_60; [L234] SORT_1 var_64 = var_64_arg_0 | var_64_arg_1; [L235] var_64 = var_64 & mask_SORT_1 [L236] SORT_8 var_57_arg_0 = input_9; [L237] SORT_8 var_57_arg_1 = var_56; [L238] SORT_1 var_57 = var_57_arg_0 == var_57_arg_1; [L239] SORT_8 var_67_arg_0 = input_9; [L240] SORT_8 var_67_arg_1 = var_66; [L241] SORT_1 var_67 = var_67_arg_0 == var_67_arg_1; [L242] SORT_1 var_68_arg_0 = var_57; [L243] SORT_1 var_68_arg_1 = var_67; [L244] SORT_6 var_68 = ((SORT_6)var_68_arg_0 << 1) | var_68_arg_1; [L245] var_68 = var_68 & mask_SORT_6 [L246] SORT_1 var_69_arg_0 = var_64; [L247] SORT_6 var_69_arg_1 = var_68; [L248] SORT_8 var_69 = ((SORT_8)var_69_arg_0 << 2) | var_69_arg_1; [L249] var_69 = var_69 & mask_SORT_8 [L250] SORT_8 var_70_arg_0 = var_69; [L251] SORT_1 var_70 = var_70_arg_0 != 0; [L252] SORT_1 var_61_arg_0 = var_60; [L253] SORT_1 var_61_arg_1 = var_45; [L254] SORT_1 var_61_arg_2 = var_45; [L255] EXPR var_61_arg_0 ? var_61_arg_1 : var_61_arg_2 [L255] SORT_1 var_61 = var_61_arg_0 ? var_61_arg_1 : var_61_arg_2; [L256] SORT_1 var_58_arg_0 = var_57; [L257] SORT_1 var_58_arg_1 = var_27; [L258] SORT_1 var_58_arg_2 = var_27; [L259] EXPR var_58_arg_0 ? var_58_arg_1 : var_58_arg_2 [L259] SORT_1 var_58 = var_58_arg_0 ? var_58_arg_1 : var_58_arg_2; [L260] SORT_1 var_65_arg_0 = var_64; [L261] SORT_1 var_65_arg_1 = var_61; [L262] SORT_1 var_65_arg_2 = var_58; [L263] EXPR var_65_arg_0 ? var_65_arg_1 : var_65_arg_2 [L263] SORT_1 var_65 = var_65_arg_0 ? var_65_arg_1 : var_65_arg_2; [L264] SORT_8 var_53_arg_0 = input_9; [L265] SORT_8 var_53_arg_1 = var_52; [L266] SORT_1 var_53 = var_53_arg_0 == var_53_arg_1; [L267] SORT_8 var_50_arg_0 = input_9; [L268] SORT_8 var_50_arg_1 = var_49; [L269] SORT_1 var_50 = var_50_arg_0 == var_50_arg_1; [L270] SORT_1 var_54_arg_0 = var_53; [L271] SORT_1 var_54_arg_1 = var_50; [L272] SORT_1 var_54 = var_54_arg_0 | var_54_arg_1; [L273] var_54 = var_54 & mask_SORT_1 [L274] SORT_1 var_51_arg_0 = var_50; [L275] SORT_1 var_51_arg_1 = var_45; [L276] SORT_1 var_51_arg_2 = var_27; [L277] EXPR var_51_arg_0 ? var_51_arg_1 : var_51_arg_2 [L277] SORT_1 var_51 = var_51_arg_0 ? var_51_arg_1 : var_51_arg_2; [L278] SORT_8 var_47_arg_0 = input_9; [L279] SORT_8 var_47_arg_1 = var_46; [L280] SORT_1 var_47 = var_47_arg_0 == var_47_arg_1; [L281] SORT_1 var_48_arg_0 = var_47; [L282] SORT_1 var_48_arg_1 = var_27; [L283] SORT_1 var_48_arg_2 = var_45; [L284] EXPR var_48_arg_0 ? var_48_arg_1 : var_48_arg_2 [L284] SORT_1 var_48 = var_48_arg_0 ? var_48_arg_1 : var_48_arg_2; [L285] SORT_1 var_55_arg_0 = var_54; [L286] SORT_1 var_55_arg_1 = var_51; [L287] SORT_1 var_55_arg_2 = var_48; [L288] EXPR var_55_arg_0 ? var_55_arg_1 : var_55_arg_2 [L288] SORT_1 var_55 = var_55_arg_0 ? var_55_arg_1 : var_55_arg_2; [L289] SORT_1 var_71_arg_0 = var_70; [L290] SORT_1 var_71_arg_1 = var_65; [L291] SORT_1 var_71_arg_2 = var_55; [L292] EXPR var_71_arg_0 ? var_71_arg_1 : var_71_arg_2 [L292] SORT_1 var_71 = var_71_arg_0 ? var_71_arg_1 : var_71_arg_2; [L293] var_71 = var_71 & mask_SORT_1 [L294] SORT_6 var_73_arg_0 = input_10; [L295] SORT_6 var_73_arg_1 = var_72; [L296] SORT_1 var_73 = var_73_arg_0 == var_73_arg_1; [L297] SORT_1 var_281_arg_0 = var_75; [L298] SORT_1 var_281_arg_1 = var_73; [L299] SORT_6 var_281 = ((SORT_6)var_281_arg_0 << 1) | var_281_arg_1; [L300] var_281 = var_281 & mask_SORT_6 [L301] SORT_6 var_282_arg_0 = var_281; [L302] SORT_1 var_282 = var_282_arg_0 != 0; [L303] SORT_1 var_283_arg_0 = var_71; [L304] SORT_1 var_283_arg_1 = var_282; [L305] SORT_1 var_283_arg_2 = var_27; [L306] EXPR var_283_arg_0 ? var_283_arg_1 : var_283_arg_2 [L306] SORT_1 var_283 = var_283_arg_0 ? var_283_arg_1 : var_283_arg_2; [L307] SORT_1 var_292_arg_0 = var_291; [L308] SORT_1 var_292_arg_1 = var_75; [L309] SORT_1 var_292_arg_2 = var_283; [L310] EXPR var_292_arg_0 ? var_292_arg_1 : var_292_arg_2 [L310] SORT_1 var_292 = var_292_arg_0 ? var_292_arg_1 : var_292_arg_2; [L311] SORT_6 var_85_arg_0 = input_7; [L312] SORT_6 var_85_arg_1 = var_84; [L313] SORT_1 var_85 = var_85_arg_0 == var_85_arg_1; [L314] SORT_1 var_293_arg_0 = var_292; [L315] SORT_1 var_293_arg_1 = var_85; [L316] SORT_6 var_293 = ((SORT_6)var_293_arg_0 << 1) | var_293_arg_1; [L317] var_293 = var_293 & mask_SORT_6 [L318] SORT_1 var_294_arg_0 = var_82; [L319] SORT_6 var_294_arg_1 = var_293; [L320] SORT_8 var_294 = ((SORT_8)var_294_arg_0 << 2) | var_294_arg_1; [L321] var_294 = var_294 & mask_SORT_8 [L322] SORT_8 var_295_arg_0 = var_294; [L323] SORT_1 var_295 = var_295_arg_0 != 0; [L324] SORT_1 var_296_arg_0 = input_13; [L325] SORT_1 var_296_arg_1 = var_295; [L326] SORT_6 var_296 = ((SORT_6)var_296_arg_0 << 1) | var_296_arg_1; [L327] var_296 = var_296 & mask_SORT_6 [L328] SORT_6 var_297_arg_0 = var_296; [L329] SORT_1 var_297 = var_297_arg_0 == mask_SORT_6; [L330] SORT_14 var_247_arg_0 = input_15; [L331] SORT_14 var_247_arg_1 = var_246; [L332] SORT_1 var_247 = var_247_arg_0 == var_247_arg_1; [L333] SORT_14 var_244_arg_0 = input_15; [L334] SORT_14 var_244_arg_1 = var_243; [L335] SORT_1 var_244 = var_244_arg_0 == var_244_arg_1; [L336] SORT_1 var_248_arg_0 = var_247; [L337] SORT_1 var_248_arg_1 = var_244; [L338] SORT_1 var_248 = var_248_arg_0 | var_248_arg_1; [L339] var_248 = var_248 & mask_SORT_1 [L340] SORT_14 var_241_arg_0 = input_15; [L341] SORT_14 var_241_arg_1 = var_240; [L342] SORT_1 var_241 = var_241_arg_0 == var_241_arg_1; [L343] SORT_14 var_251_arg_0 = input_15; [L344] SORT_14 var_251_arg_1 = var_250; [L345] SORT_1 var_251 = var_251_arg_0 == var_251_arg_1; [L346] SORT_1 var_252_arg_0 = var_241; [L347] SORT_1 var_252_arg_1 = var_251; [L348] SORT_6 var_252 = ((SORT_6)var_252_arg_0 << 1) | var_252_arg_1; [L349] var_252 = var_252 & mask_SORT_6 [L350] SORT_1 var_253_arg_0 = var_248; [L351] SORT_6 var_253_arg_1 = var_252; [L352] SORT_8 var_253 = ((SORT_8)var_253_arg_0 << 2) | var_253_arg_1; [L353] var_253 = var_253 & mask_SORT_8 [L354] SORT_8 var_254_arg_0 = var_253; [L355] SORT_1 var_254 = var_254_arg_0 != 0; [L356] SORT_14 var_237_arg_0 = input_15; [L357] SORT_14 var_237_arg_1 = var_236; [L358] SORT_1 var_237 = var_237_arg_0 == var_237_arg_1; [L359] SORT_14 var_234_arg_0 = input_15; [L360] SORT_14 var_234_arg_1 = var_233; [L361] SORT_1 var_234 = var_234_arg_0 == var_234_arg_1; [L362] SORT_1 var_238_arg_0 = var_237; [L363] SORT_1 var_238_arg_1 = var_234; [L364] SORT_1 var_238 = var_238_arg_0 | var_238_arg_1; [L365] var_238 = var_238 & mask_SORT_1 [L366] SORT_14 var_231_arg_0 = input_15; [L367] SORT_14 var_231_arg_1 = var_230; [L368] SORT_1 var_231 = var_231_arg_0 == var_231_arg_1; [L369] SORT_14 var_257_arg_0 = input_15; [L370] SORT_14 var_257_arg_1 = var_256; [L371] SORT_1 var_257 = var_257_arg_0 == var_257_arg_1; [L372] SORT_1 var_258_arg_0 = var_231; [L373] SORT_1 var_258_arg_1 = var_257; [L374] SORT_6 var_258 = ((SORT_6)var_258_arg_0 << 1) | var_258_arg_1; [L375] var_258 = var_258 & mask_SORT_6 [L376] SORT_1 var_259_arg_0 = var_238; [L377] SORT_6 var_259_arg_1 = var_258; [L378] SORT_8 var_259 = ((SORT_8)var_259_arg_0 << 2) | var_259_arg_1; [L379] var_259 = var_259 & mask_SORT_8 [L380] SORT_1 var_260_arg_0 = var_254; [L381] SORT_8 var_260_arg_1 = var_259; [L382] SORT_105 var_260 = ((SORT_105)var_260_arg_0 << 3) | var_260_arg_1; [L383] var_260 = var_260 & mask_SORT_105 [L384] SORT_105 var_261_arg_0 = var_260; [L385] SORT_1 var_261 = var_261_arg_0 != 0; [L386] SORT_14 var_222_arg_0 = input_15; [L387] SORT_14 var_222_arg_1 = var_221; [L388] SORT_1 var_222 = var_222_arg_0 == var_222_arg_1; [L389] SORT_14 var_219_arg_0 = input_15; [L390] SORT_14 var_219_arg_1 = var_218; [L391] SORT_1 var_219 = var_219_arg_0 == var_219_arg_1; [L392] SORT_1 var_223_arg_0 = var_222; [L393] SORT_1 var_223_arg_1 = var_219; [L394] SORT_1 var_223 = var_223_arg_0 | var_223_arg_1; [L395] var_223 = var_223 & mask_SORT_1 [L396] SORT_14 var_216_arg_0 = input_15; [L397] SORT_14 var_216_arg_1 = var_117; [L398] SORT_1 var_216 = var_216_arg_0 == var_216_arg_1; [L399] SORT_14 var_225_arg_0 = input_15; [L400] SORT_14 var_225_arg_1 = var_119; [L401] SORT_1 var_225 = var_225_arg_0 == var_225_arg_1; [L402] SORT_1 var_226_arg_0 = var_216; [L403] SORT_1 var_226_arg_1 = var_225; [L404] SORT_6 var_226 = ((SORT_6)var_226_arg_0 << 1) | var_226_arg_1; [L405] var_226 = var_226 & mask_SORT_6 [L406] SORT_1 var_227_arg_0 = var_223; [L407] SORT_6 var_227_arg_1 = var_226; [L408] SORT_8 var_227 = ((SORT_8)var_227_arg_0 << 2) | var_227_arg_1; [L409] var_227 = var_227 & mask_SORT_8 [L410] SORT_8 var_228_arg_0 = var_227; [L411] SORT_1 var_228 = var_228_arg_0 != 0; [L412] SORT_14 var_213_arg_0 = input_15; [L413] SORT_14 var_213_arg_1 = var_123; [L414] SORT_1 var_213 = var_213_arg_0 == var_213_arg_1; [L415] SORT_14 var_211_arg_0 = input_15; [L416] SORT_14 var_211_arg_1 = var_121; [L417] SORT_1 var_211 = var_211_arg_0 == var_211_arg_1; [L418] SORT_1 var_214_arg_0 = var_213; [L419] SORT_1 var_214_arg_1 = var_211; [L420] SORT_1 var_214 = var_214_arg_0 | var_214_arg_1; [L421] var_214 = var_214 & mask_SORT_1 [L422] SORT_14 var_209_arg_0 = input_15; [L423] SORT_14 var_209_arg_1 = var_125; [L424] SORT_1 var_209 = var_209_arg_0 == var_209_arg_1; [L425] SORT_14 var_263_arg_0 = input_15; [L426] SORT_14 var_263_arg_1 = var_127; [L427] SORT_1 var_263 = var_263_arg_0 == var_263_arg_1; [L428] SORT_1 var_264_arg_0 = var_209; [L429] SORT_1 var_264_arg_1 = var_263; [L430] SORT_6 var_264 = ((SORT_6)var_264_arg_0 << 1) | var_264_arg_1; [L431] var_264 = var_264 & mask_SORT_6 [L432] SORT_1 var_265_arg_0 = var_214; [L433] SORT_6 var_265_arg_1 = var_264; [L434] SORT_8 var_265 = ((SORT_8)var_265_arg_0 << 2) | var_265_arg_1; [L435] var_265 = var_265 & mask_SORT_8 [L436] SORT_1 var_266_arg_0 = var_228; [L437] SORT_8 var_266_arg_1 = var_265; [L438] SORT_105 var_266 = ((SORT_105)var_266_arg_0 << 3) | var_266_arg_1; [L439] var_266 = var_266 & mask_SORT_105 [L440] SORT_1 var_267_arg_0 = var_261; [L441] SORT_105 var_267_arg_1 = var_266; [L442] SORT_14 var_267 = ((SORT_14)var_267_arg_0 << 4) | var_267_arg_1; [L443] var_267 = var_267 & mask_SORT_14 [L444] SORT_14 var_268_arg_0 = var_267; [L445] SORT_1 var_268 = var_268_arg_0 != 0; [L446] SORT_1 var_245_arg_0 = var_244; [L447] SORT_1 var_245_arg_1 = var_45; [L448] SORT_1 var_245_arg_2 = var_45; [L449] EXPR var_245_arg_0 ? var_245_arg_1 : var_245_arg_2 [L449] SORT_1 var_245 = var_245_arg_0 ? var_245_arg_1 : var_245_arg_2; [L450] SORT_1 var_242_arg_0 = var_241; [L451] SORT_1 var_242_arg_1 = var_45; [L452] SORT_1 var_242_arg_2 = var_45; [L453] EXPR var_242_arg_0 ? var_242_arg_1 : var_242_arg_2 [L453] SORT_1 var_242 = var_242_arg_0 ? var_242_arg_1 : var_242_arg_2; [L454] SORT_1 var_249_arg_0 = var_248; [L455] SORT_1 var_249_arg_1 = var_245; [L456] SORT_1 var_249_arg_2 = var_242; [L457] EXPR var_249_arg_0 ? var_249_arg_1 : var_249_arg_2 [L457] SORT_1 var_249 = var_249_arg_0 ? var_249_arg_1 : var_249_arg_2; [L458] SORT_1 var_235_arg_0 = var_234; [L459] SORT_1 var_235_arg_1 = var_45; [L460] SORT_1 var_235_arg_2 = var_45; [L461] EXPR var_235_arg_0 ? var_235_arg_1 : var_235_arg_2 [L461] SORT_1 var_235 = var_235_arg_0 ? var_235_arg_1 : var_235_arg_2; [L462] SORT_1 var_232_arg_0 = var_231; [L463] SORT_1 var_232_arg_1 = var_45; [L464] SORT_1 var_232_arg_2 = var_45; [L465] EXPR var_232_arg_0 ? var_232_arg_1 : var_232_arg_2 [L465] SORT_1 var_232 = var_232_arg_0 ? var_232_arg_1 : var_232_arg_2; [L466] SORT_1 var_239_arg_0 = var_238; [L467] SORT_1 var_239_arg_1 = var_235; [L468] SORT_1 var_239_arg_2 = var_232; [L469] EXPR var_239_arg_0 ? var_239_arg_1 : var_239_arg_2 [L469] SORT_1 var_239 = var_239_arg_0 ? var_239_arg_1 : var_239_arg_2; [L470] SORT_1 var_255_arg_0 = var_254; [L471] SORT_1 var_255_arg_1 = var_249; [L472] SORT_1 var_255_arg_2 = var_239; [L473] EXPR var_255_arg_0 ? var_255_arg_1 : var_255_arg_2 [L473] SORT_1 var_255 = var_255_arg_0 ? var_255_arg_1 : var_255_arg_2; [L474] SORT_1 var_220_arg_0 = var_219; [L475] SORT_1 var_220_arg_1 = var_45; [L476] SORT_1 var_220_arg_2 = var_45; [L477] EXPR var_220_arg_0 ? var_220_arg_1 : var_220_arg_2 [L477] SORT_1 var_220 = var_220_arg_0 ? var_220_arg_1 : var_220_arg_2; [L478] SORT_1 var_217_arg_0 = var_216; [L479] SORT_1 var_217_arg_1 = var_27; [L480] SORT_1 var_217_arg_2 = var_27; [L481] EXPR var_217_arg_0 ? var_217_arg_1 : var_217_arg_2 [L481] SORT_1 var_217 = var_217_arg_0 ? var_217_arg_1 : var_217_arg_2; [L482] SORT_1 var_224_arg_0 = var_223; [L483] SORT_1 var_224_arg_1 = var_220; [L484] SORT_1 var_224_arg_2 = var_217; [L485] EXPR var_224_arg_0 ? var_224_arg_1 : var_224_arg_2 [L485] SORT_1 var_224 = var_224_arg_0 ? var_224_arg_1 : var_224_arg_2; [L486] SORT_1 var_212_arg_0 = var_211; [L487] SORT_1 var_212_arg_1 = var_27; [L488] SORT_1 var_212_arg_2 = var_27; [L489] EXPR var_212_arg_0 ? var_212_arg_1 : var_212_arg_2 [L489] SORT_1 var_212 = var_212_arg_0 ? var_212_arg_1 : var_212_arg_2; [L490] SORT_1 var_210_arg_0 = var_209; [L491] SORT_1 var_210_arg_1 = var_27; [L492] SORT_1 var_210_arg_2 = var_27; [L493] EXPR var_210_arg_0 ? var_210_arg_1 : var_210_arg_2 [L493] SORT_1 var_210 = var_210_arg_0 ? var_210_arg_1 : var_210_arg_2; [L494] SORT_1 var_215_arg_0 = var_214; [L495] SORT_1 var_215_arg_1 = var_212; [L496] SORT_1 var_215_arg_2 = var_210; [L497] EXPR var_215_arg_0 ? var_215_arg_1 : var_215_arg_2 [L497] SORT_1 var_215 = var_215_arg_0 ? var_215_arg_1 : var_215_arg_2; [L498] SORT_1 var_229_arg_0 = var_228; [L499] SORT_1 var_229_arg_1 = var_224; [L500] SORT_1 var_229_arg_2 = var_215; [L501] EXPR var_229_arg_0 ? var_229_arg_1 : var_229_arg_2 [L501] SORT_1 var_229 = var_229_arg_0 ? var_229_arg_1 : var_229_arg_2; [L502] SORT_1 var_262_arg_0 = var_261; [L503] SORT_1 var_262_arg_1 = var_255; [L504] SORT_1 var_262_arg_2 = var_229; [L505] EXPR var_262_arg_0 ? var_262_arg_1 : var_262_arg_2 [L505] SORT_1 var_262 = var_262_arg_0 ? var_262_arg_1 : var_262_arg_2; [L506] SORT_14 var_194_arg_0 = input_15; [L507] SORT_14 var_194_arg_1 = var_131; [L508] SORT_1 var_194 = var_194_arg_0 == var_194_arg_1; [L509] SORT_14 var_192_arg_0 = input_15; [L510] SORT_14 var_192_arg_1 = var_129; [L511] SORT_1 var_192 = var_192_arg_0 == var_192_arg_1; [L512] SORT_1 var_195_arg_0 = var_194; [L513] SORT_1 var_195_arg_1 = var_192; [L514] SORT_1 var_195 = var_195_arg_0 | var_195_arg_1; [L515] var_195 = var_195 & mask_SORT_1 [L516] SORT_14 var_190_arg_0 = input_15; [L517] SORT_14 var_190_arg_1 = var_189; [L518] SORT_1 var_190 = var_190_arg_0 == var_190_arg_1; [L519] SORT_14 var_198_arg_0 = input_15; [L520] SORT_14 var_198_arg_1 = var_197; [L521] SORT_1 var_198 = var_198_arg_0 == var_198_arg_1; [L522] SORT_1 var_199_arg_0 = var_190; [L523] SORT_1 var_199_arg_1 = var_198; [L524] SORT_6 var_199 = ((SORT_6)var_199_arg_0 << 1) | var_199_arg_1; [L525] var_199 = var_199 & mask_SORT_6 [L526] SORT_1 var_200_arg_0 = var_195; [L527] SORT_6 var_200_arg_1 = var_199; [L528] SORT_8 var_200 = ((SORT_8)var_200_arg_0 << 2) | var_200_arg_1; [L529] var_200 = var_200 & mask_SORT_8 [L530] SORT_8 var_201_arg_0 = var_200; [L531] SORT_1 var_201 = var_201_arg_0 != 0; [L532] SORT_14 var_186_arg_0 = input_15; [L533] SORT_14 var_186_arg_1 = var_97; [L534] SORT_1 var_186 = var_186_arg_0 == var_186_arg_1; [L535] SORT_14 var_184_arg_0 = input_15; [L536] SORT_14 var_184_arg_1 = var_95; [L537] SORT_1 var_184 = var_184_arg_0 == var_184_arg_1; [L538] SORT_1 var_187_arg_0 = var_186; [L539] SORT_1 var_187_arg_1 = var_184; [L540] SORT_1 var_187 = var_187_arg_0 | var_187_arg_1; [L541] var_187 = var_187 & mask_SORT_1 [L542] SORT_14 var_182_arg_0 = input_15; [L543] SORT_14 var_182_arg_1 = var_101; [L544] SORT_1 var_182 = var_182_arg_0 == var_182_arg_1; [L545] SORT_14 var_203_arg_0 = input_15; [L546] SORT_14 var_203_arg_1 = var_133; [L547] SORT_1 var_203 = var_203_arg_0 == var_203_arg_1; [L548] SORT_1 var_204_arg_0 = var_182; [L549] SORT_1 var_204_arg_1 = var_203; [L550] SORT_6 var_204 = ((SORT_6)var_204_arg_0 << 1) | var_204_arg_1; [L551] var_204 = var_204 & mask_SORT_6 [L552] SORT_1 var_205_arg_0 = var_187; [L553] SORT_6 var_205_arg_1 = var_204; [L554] SORT_8 var_205 = ((SORT_8)var_205_arg_0 << 2) | var_205_arg_1; [L555] var_205 = var_205 & mask_SORT_8 [L556] SORT_1 var_206_arg_0 = var_201; [L557] SORT_8 var_206_arg_1 = var_205; [L558] SORT_105 var_206 = ((SORT_105)var_206_arg_0 << 3) | var_206_arg_1; [L559] var_206 = var_206 & mask_SORT_105 [L560] SORT_105 var_207_arg_0 = var_206; [L561] SORT_1 var_207 = var_207_arg_0 != 0; [L562] SORT_1 var_193_arg_0 = var_192; [L563] SORT_1 var_193_arg_1 = var_27; [L564] SORT_1 var_193_arg_2 = var_27; [L565] EXPR var_193_arg_0 ? var_193_arg_1 : var_193_arg_2 [L565] SORT_1 var_193 = var_193_arg_0 ? var_193_arg_1 : var_193_arg_2; [L566] SORT_1 var_191_arg_0 = var_190; [L567] SORT_1 var_191_arg_1 = var_45; [L568] SORT_1 var_191_arg_2 = var_45; [L569] EXPR var_191_arg_0 ? var_191_arg_1 : var_191_arg_2 [L569] SORT_1 var_191 = var_191_arg_0 ? var_191_arg_1 : var_191_arg_2; [L570] SORT_1 var_196_arg_0 = var_195; [L571] SORT_1 var_196_arg_1 = var_193; [L572] SORT_1 var_196_arg_2 = var_191; [L573] EXPR var_196_arg_0 ? var_196_arg_1 : var_196_arg_2 [L573] SORT_1 var_196 = var_196_arg_0 ? var_196_arg_1 : var_196_arg_2; [L574] SORT_1 var_185_arg_0 = var_184; [L575] SORT_1 var_185_arg_1 = var_27; [L576] SORT_1 var_185_arg_2 = var_27; [L577] EXPR var_185_arg_0 ? var_185_arg_1 : var_185_arg_2 [L577] SORT_1 var_185 = var_185_arg_0 ? var_185_arg_1 : var_185_arg_2; [L578] SORT_1 var_183_arg_0 = var_182; [L579] SORT_1 var_183_arg_1 = var_27; [L580] SORT_1 var_183_arg_2 = var_27; [L581] EXPR var_183_arg_0 ? var_183_arg_1 : var_183_arg_2 [L581] SORT_1 var_183 = var_183_arg_0 ? var_183_arg_1 : var_183_arg_2; [L582] SORT_1 var_188_arg_0 = var_187; [L583] SORT_1 var_188_arg_1 = var_185; [L584] SORT_1 var_188_arg_2 = var_183; [L585] EXPR var_188_arg_0 ? var_188_arg_1 : var_188_arg_2 [L585] SORT_1 var_188 = var_188_arg_0 ? var_188_arg_1 : var_188_arg_2; [L586] SORT_1 var_202_arg_0 = var_201; [L587] SORT_1 var_202_arg_1 = var_196; [L588] SORT_1 var_202_arg_2 = var_188; [L589] EXPR var_202_arg_0 ? var_202_arg_1 : var_202_arg_2 [L589] SORT_1 var_202 = var_202_arg_0 ? var_202_arg_1 : var_202_arg_2; [L590] SORT_14 var_174_arg_0 = input_15; [L591] SORT_14 var_174_arg_1 = var_135; [L592] SORT_1 var_174 = var_174_arg_0 == var_174_arg_1; [L593] SORT_14 var_172_arg_0 = input_15; [L594] SORT_14 var_172_arg_1 = var_171; [L595] SORT_1 var_172 = var_172_arg_0 == var_172_arg_1; [L596] SORT_1 var_175_arg_0 = var_174; [L597] SORT_1 var_175_arg_1 = var_172; [L598] SORT_1 var_175 = var_175_arg_0 | var_175_arg_1; [L599] var_175 = var_175 & mask_SORT_1 [L600] SORT_14 var_169_arg_0 = input_15; [L601] SORT_14 var_169_arg_1 = var_139; [L602] SORT_1 var_169 = var_169_arg_0 == var_169_arg_1; [L603] SORT_14 var_177_arg_0 = input_15; [L604] SORT_14 var_177_arg_1 = var_159; [L605] SORT_1 var_177 = var_177_arg_0 == var_177_arg_1; [L606] SORT_1 var_178_arg_0 = var_169; [L607] SORT_1 var_178_arg_1 = var_177; [L608] SORT_6 var_178 = ((SORT_6)var_178_arg_0 << 1) | var_178_arg_1; [L609] var_178 = var_178 & mask_SORT_6 [L610] SORT_1 var_179_arg_0 = var_175; [L611] SORT_6 var_179_arg_1 = var_178; [L612] SORT_8 var_179 = ((SORT_8)var_179_arg_0 << 2) | var_179_arg_1; [L613] var_179 = var_179 & mask_SORT_8 [L614] SORT_8 var_180_arg_0 = var_179; [L615] SORT_1 var_180 = var_180_arg_0 != 0; [L616] SORT_1 var_173_arg_0 = var_172; [L617] SORT_1 var_173_arg_1 = var_45; [L618] SORT_1 var_173_arg_2 = var_27; [L619] EXPR var_173_arg_0 ? var_173_arg_1 : var_173_arg_2 [L619] SORT_1 var_173 = var_173_arg_0 ? var_173_arg_1 : var_173_arg_2; [L620] SORT_1 var_170_arg_0 = var_169; [L621] SORT_1 var_170_arg_1 = var_27; [L622] SORT_1 var_170_arg_2 = var_27; [L623] EXPR var_170_arg_0 ? var_170_arg_1 : var_170_arg_2 [L623] SORT_1 var_170 = var_170_arg_0 ? var_170_arg_1 : var_170_arg_2; [L624] SORT_1 var_176_arg_0 = var_175; [L625] SORT_1 var_176_arg_1 = var_173; [L626] SORT_1 var_176_arg_2 = var_170; [L627] EXPR var_176_arg_0 ? var_176_arg_1 : var_176_arg_2 [L627] SORT_1 var_176 = var_176_arg_0 ? var_176_arg_1 : var_176_arg_2; [L628] SORT_14 var_166_arg_0 = input_15; [L629] SORT_14 var_166_arg_1 = var_99; [L630] SORT_1 var_166 = var_166_arg_0 == var_166_arg_1; [L631] SORT_14 var_164_arg_0 = input_15; [L632] SORT_14 var_164_arg_1 = var_137; [L633] SORT_1 var_164 = var_164_arg_0 == var_164_arg_1; [L634] SORT_1 var_167_arg_0 = var_166; [L635] SORT_1 var_167_arg_1 = var_164; [L636] SORT_1 var_167 = var_167_arg_0 | var_167_arg_1; [L637] var_167 = var_167 & mask_SORT_1 [L638] SORT_1 var_165_arg_0 = var_164; [L639] SORT_1 var_165_arg_1 = var_27; [L640] SORT_1 var_165_arg_2 = var_27; [L641] EXPR var_165_arg_0 ? var_165_arg_1 : var_165_arg_2 [L641] SORT_1 var_165 = var_165_arg_0 ? var_165_arg_1 : var_165_arg_2; [L642] SORT_14 var_162_arg_0 = input_15; [L643] SORT_14 var_162_arg_1 = var_161; [L644] SORT_1 var_162 = var_162_arg_0 == var_162_arg_1; [L645] SORT_1 var_163_arg_0 = var_162; [L646] SORT_1 var_163_arg_1 = var_45; [L647] SORT_1 var_163_arg_2 = var_45; [L648] EXPR var_163_arg_0 ? var_163_arg_1 : var_163_arg_2 [L648] SORT_1 var_163 = var_163_arg_0 ? var_163_arg_1 : var_163_arg_2; [L649] SORT_1 var_168_arg_0 = var_167; [L650] SORT_1 var_168_arg_1 = var_165; [L651] SORT_1 var_168_arg_2 = var_163; [L652] EXPR var_168_arg_0 ? var_168_arg_1 : var_168_arg_2 [L652] SORT_1 var_168 = var_168_arg_0 ? var_168_arg_1 : var_168_arg_2; [L653] SORT_1 var_181_arg_0 = var_180; [L654] SORT_1 var_181_arg_1 = var_176; [L655] SORT_1 var_181_arg_2 = var_168; [L656] EXPR var_181_arg_0 ? var_181_arg_1 : var_181_arg_2 [L656] SORT_1 var_181 = var_181_arg_0 ? var_181_arg_1 : var_181_arg_2; [L657] SORT_1 var_208_arg_0 = var_207; [L658] SORT_1 var_208_arg_1 = var_202; [L659] SORT_1 var_208_arg_2 = var_181; [L660] EXPR var_208_arg_0 ? var_208_arg_1 : var_208_arg_2 [L660] SORT_1 var_208 = var_208_arg_0 ? var_208_arg_1 : var_208_arg_2; [L661] SORT_1 var_269_arg_0 = var_268; [L662] SORT_1 var_269_arg_1 = var_262; [L663] SORT_1 var_269_arg_2 = var_208; [L664] EXPR var_269_arg_0 ? var_269_arg_1 : var_269_arg_2 [L664] SORT_1 var_269 = var_269_arg_0 ? var_269_arg_1 : var_269_arg_2; [L665] SORT_14 var_160_arg_0 = input_15; [L666] SORT_14 var_160_arg_1 = var_159; [L667] SORT_1 var_160 = var_160_arg_0 == var_160_arg_1; [L668] SORT_14 var_140_arg_0 = input_15; [L669] SORT_14 var_140_arg_1 = var_139; [L670] SORT_1 var_140 = var_140_arg_0 == var_140_arg_1; [L671] SORT_14 var_138_arg_0 = input_15; [L672] SORT_14 var_138_arg_1 = var_137; [L673] SORT_1 var_138 = var_138_arg_0 == var_138_arg_1; [L674] SORT_14 var_136_arg_0 = input_15; [L675] SORT_14 var_136_arg_1 = var_135; [L676] SORT_1 var_136 = var_136_arg_0 == var_136_arg_1; [L677] SORT_14 var_134_arg_0 = input_15; [L678] SORT_14 var_134_arg_1 = var_133; [L679] SORT_1 var_134 = var_134_arg_0 == var_134_arg_1; [L680] SORT_14 var_132_arg_0 = input_15; [L681] SORT_14 var_132_arg_1 = var_131; [L682] SORT_1 var_132 = var_132_arg_0 == var_132_arg_1; [L683] SORT_14 var_130_arg_0 = input_15; [L684] SORT_14 var_130_arg_1 = var_129; [L685] SORT_1 var_130 = var_130_arg_0 == var_130_arg_1; [L686] SORT_14 var_128_arg_0 = input_15; [L687] SORT_14 var_128_arg_1 = var_127; [L688] SORT_1 var_128 = var_128_arg_0 == var_128_arg_1; [L689] SORT_14 var_126_arg_0 = input_15; [L690] SORT_14 var_126_arg_1 = var_125; [L691] SORT_1 var_126 = var_126_arg_0 == var_126_arg_1; [L692] SORT_14 var_124_arg_0 = input_15; [L693] SORT_14 var_124_arg_1 = var_123; [L694] SORT_1 var_124 = var_124_arg_0 == var_124_arg_1; [L695] SORT_14 var_122_arg_0 = input_15; [L696] SORT_14 var_122_arg_1 = var_121; [L697] SORT_1 var_122 = var_122_arg_0 == var_122_arg_1; [L698] SORT_14 var_120_arg_0 = input_15; [L699] SORT_14 var_120_arg_1 = var_119; [L700] SORT_1 var_120 = var_120_arg_0 == var_120_arg_1; [L701] SORT_14 var_118_arg_0 = input_15; [L702] SORT_14 var_118_arg_1 = var_117; [L703] SORT_1 var_118 = var_118_arg_0 == var_118_arg_1; [L704] SORT_1 var_141_arg_0 = var_120; [L705] SORT_1 var_141_arg_1 = var_118; [L706] SORT_6 var_141 = ((SORT_6)var_141_arg_0 << 1) | var_141_arg_1; [L707] var_141 = var_141 & mask_SORT_6 [L708] SORT_1 var_142_arg_0 = var_122; [L709] SORT_6 var_142_arg_1 = var_141; [L710] SORT_8 var_142 = ((SORT_8)var_142_arg_0 << 2) | var_142_arg_1; [L711] var_142 = var_142 & mask_SORT_8 [L712] SORT_1 var_143_arg_0 = var_124; [L713] SORT_8 var_143_arg_1 = var_142; [L714] SORT_105 var_143 = ((SORT_105)var_143_arg_0 << 3) | var_143_arg_1; [L715] var_143 = var_143 & mask_SORT_105 [L716] SORT_1 var_144_arg_0 = var_126; [L717] SORT_105 var_144_arg_1 = var_143; [L718] SORT_14 var_144 = ((SORT_14)var_144_arg_0 << 4) | var_144_arg_1; [L719] var_144 = var_144 & mask_SORT_14 [L720] SORT_1 var_146_arg_0 = var_128; [L721] SORT_14 var_146_arg_1 = var_144; [L722] SORT_145 var_146 = ((SORT_145)var_146_arg_0 << 5) | var_146_arg_1; [L723] var_146 = var_146 & mask_SORT_145 [L724] SORT_1 var_148_arg_0 = var_130; [L725] SORT_145 var_148_arg_1 = var_146; [L726] SORT_147 var_148 = ((SORT_147)var_148_arg_0 << 6) | var_148_arg_1; [L727] var_148 = var_148 & mask_SORT_147 [L728] SORT_1 var_149_arg_0 = var_132; [L729] SORT_147 var_149_arg_1 = var_148; [L730] SORT_17 var_149 = ((SORT_17)var_149_arg_0 << 7) | var_149_arg_1; [L731] var_149 = var_149 & mask_SORT_17 [L732] SORT_1 var_151_arg_0 = var_134; [L733] SORT_17 var_151_arg_1 = var_149; [L734] SORT_150 var_151 = ((SORT_150)var_151_arg_0 << 8) | var_151_arg_1; [L735] var_151 = var_151 & mask_SORT_150 [L736] SORT_1 var_153_arg_0 = var_136; [L737] SORT_150 var_153_arg_1 = var_151; [L738] SORT_152 var_153 = ((SORT_152)var_153_arg_0 << 9) | var_153_arg_1; [L739] var_153 = var_153 & mask_SORT_152 [L740] SORT_1 var_155_arg_0 = var_138; [L741] SORT_152 var_155_arg_1 = var_153; [L742] SORT_154 var_155 = ((SORT_154)var_155_arg_0 << 10) | var_155_arg_1; [L743] var_155 = var_155 & mask_SORT_154 [L744] SORT_1 var_157_arg_0 = var_140; [L745] SORT_154 var_157_arg_1 = var_155; [L746] SORT_156 var_157 = ((SORT_156)var_157_arg_0 << 11) | var_157_arg_1; [L747] var_157 = var_157 & mask_SORT_156 [L748] SORT_156 var_158_arg_0 = var_157; [L749] SORT_1 var_158 = var_158_arg_0 != 0; [L750] SORT_1 var_270_arg_0 = var_160; [L751] SORT_1 var_270_arg_1 = var_158; [L752] SORT_6 var_270 = ((SORT_6)var_270_arg_0 << 1) | var_270_arg_1; [L753] var_270 = var_270 & mask_SORT_6 [L754] SORT_1 var_271_arg_0 = var_269; [L755] SORT_6 var_271_arg_1 = var_270; [L756] SORT_8 var_271 = ((SORT_8)var_271_arg_0 << 2) | var_271_arg_1; [L757] var_271 = var_271 & mask_SORT_8 [L758] SORT_8 var_272_arg_0 = var_271; [L759] SORT_1 var_272 = var_272_arg_0 != 0; [L760] SORT_1 var_86_arg_0 = var_85; [L761] SORT_1 var_86 = ~var_86_arg_0; [L762] var_86 = var_86 & mask_SORT_1 [L763] SORT_1 var_87_arg_0 = input_13; [L764] SORT_1 var_87_arg_1 = var_86; [L765] SORT_6 var_87 = ((SORT_6)var_87_arg_0 << 1) | var_87_arg_1; [L766] var_87 = var_87 & mask_SORT_6 [L767] SORT_6 var_88_arg_0 = var_87; [L768] SORT_1 var_88 = var_88_arg_0 == mask_SORT_6; [L769] SORT_1 var_273_arg_0 = var_272; [L770] SORT_1 var_273_arg_1 = var_88; [L771] SORT_6 var_273 = ((SORT_6)var_273_arg_0 << 1) | var_273_arg_1; [L772] var_273 = var_273 & mask_SORT_6 [L773] SORT_1 var_274_arg_0 = var_82; [L774] SORT_6 var_274_arg_1 = var_273; [L775] SORT_8 var_274 = ((SORT_8)var_274_arg_0 << 2) | var_274_arg_1; [L776] var_274 = var_274 & mask_SORT_8 [L777] SORT_8 var_275_arg_0 = var_274; [L778] SORT_1 var_275 = var_275_arg_0 == mask_SORT_8; [L779] SORT_1 var_114_arg_0 = input_13; [L780] SORT_1 var_114 = ~var_114_arg_0; [L781] SORT_1 var_112_arg_0 = input_13; [L782] SORT_1 var_112_arg_1 = var_85; [L783] SORT_6 var_112 = ((SORT_6)var_112_arg_0 << 1) | var_112_arg_1; [L784] var_112 = var_112 & mask_SORT_6 [L785] SORT_6 var_113_arg_0 = var_112; [L786] SORT_1 var_113 = var_113_arg_0 == mask_SORT_6; [L787] SORT_1 var_115_arg_0 = var_114; [L788] SORT_1 var_115_arg_1 = var_113; [L789] SORT_6 var_115 = ((SORT_6)var_115_arg_0 << 1) | var_115_arg_1; [L790] var_115 = var_115 & mask_SORT_6 [L791] SORT_6 var_116_arg_0 = var_115; [L792] SORT_1 var_116 = var_116_arg_0 != 0; [L793] SORT_1 var_276_arg_0 = var_275; [L794] SORT_1 var_276_arg_1 = var_116; [L795] SORT_6 var_276 = ((SORT_6)var_276_arg_0 << 1) | var_276_arg_1; [L796] var_276 = var_276 & mask_SORT_6 [L797] SORT_6 var_277_arg_0 = var_276; [L798] SORT_1 var_277 = var_277_arg_0 != 0; [L799] SORT_14 var_102_arg_0 = input_15; [L800] SORT_14 var_102_arg_1 = var_101; [L801] SORT_1 var_102 = var_102_arg_0 == var_102_arg_1; [L802] SORT_14 var_100_arg_0 = input_15; [L803] SORT_14 var_100_arg_1 = var_99; [L804] SORT_1 var_100 = var_100_arg_0 == var_100_arg_1; [L805] SORT_14 var_98_arg_0 = input_15; [L806] SORT_14 var_98_arg_1 = var_97; [L807] SORT_1 var_98 = var_98_arg_0 == var_98_arg_1; [L808] SORT_14 var_96_arg_0 = input_15; [L809] SORT_14 var_96_arg_1 = var_95; [L810] SORT_1 var_96 = var_96_arg_0 == var_96_arg_1; [L811] SORT_1 var_103_arg_0 = var_98; [L812] SORT_1 var_103_arg_1 = var_96; [L813] SORT_6 var_103 = ((SORT_6)var_103_arg_0 << 1) | var_103_arg_1; [L814] var_103 = var_103 & mask_SORT_6 [L815] SORT_1 var_104_arg_0 = var_100; [L816] SORT_6 var_104_arg_1 = var_103; [L817] SORT_8 var_104 = ((SORT_8)var_104_arg_0 << 2) | var_104_arg_1; [L818] var_104 = var_104 & mask_SORT_8 [L819] SORT_1 var_106_arg_0 = var_102; [L820] SORT_8 var_106_arg_1 = var_104; [L821] SORT_105 var_106 = ((SORT_105)var_106_arg_0 << 3) | var_106_arg_1; [L822] var_106 = var_106 & mask_SORT_105 [L823] SORT_105 var_107_arg_0 = var_106; [L824] SORT_1 var_107 = var_107_arg_0 != 0; [L825] SORT_1 var_108_arg_0 = var_107; [L826] SORT_1 var_108_arg_1 = var_88; [L827] SORT_6 var_108 = ((SORT_6)var_108_arg_0 << 1) | var_108_arg_1; [L828] var_108 = var_108 & mask_SORT_6 [L829] SORT_1 var_109_arg_0 = var_82; [L830] SORT_6 var_109_arg_1 = var_108; [L831] SORT_8 var_109 = ((SORT_8)var_109_arg_0 << 2) | var_109_arg_1; [L832] var_109 = var_109 & mask_SORT_8 [L833] SORT_8 var_110_arg_0 = var_109; [L834] SORT_1 var_110 = var_110_arg_0 == mask_SORT_8; [L835] SORT_1 var_76_arg_0 = var_75; [L836] SORT_1 var_76 = ~var_76_arg_0; [L837] SORT_1 var_92_arg_0 = var_76; [L838] SORT_1 var_92_arg_1 = var_73; [L839] SORT_6 var_92 = ((SORT_6)var_92_arg_0 << 1) | var_92_arg_1; [L840] var_92 = var_92 & mask_SORT_6 [L841] SORT_6 var_93_arg_0 = var_92; [L842] SORT_1 var_93 = var_93_arg_0 == mask_SORT_6; [L843] SORT_1 var_94_arg_0 = var_93; [L844] SORT_1 var_94_arg_1 = var_75; [L845] SORT_6 var_94 = ((SORT_6)var_94_arg_0 << 1) | var_94_arg_1; [L846] SORT_1 var_83_arg_0 = var_82; [L847] SORT_1 var_83 = ~var_83_arg_0; [L848] var_83 = var_83 & mask_SORT_1 [L849] SORT_1 var_89_arg_0 = var_88; [L850] SORT_1 var_89_arg_1 = var_83; [L851] SORT_6 var_89 = ((SORT_6)var_89_arg_0 << 1) | var_89_arg_1; [L852] var_89 = var_89 & mask_SORT_6 [L853] SORT_6 var_90_arg_0 = var_89; [L854] SORT_1 var_90 = var_90_arg_0 == mask_SORT_6; [L855] SORT_1 var_77_arg_0 = var_73; [L856] SORT_1 var_77_arg_1 = var_71; [L857] SORT_6 var_77 = ((SORT_6)var_77_arg_0 << 1) | var_77_arg_1; [L858] var_77 = var_77 & mask_SORT_6 [L859] SORT_1 var_78_arg_0 = var_76; [L860] SORT_6 var_78_arg_1 = var_77; [L861] SORT_8 var_78 = ((SORT_8)var_78_arg_0 << 2) | var_78_arg_1; [L862] var_78 = var_78 & mask_SORT_8 [L863] SORT_8 var_79_arg_0 = var_78; [L864] SORT_1 var_79 = var_79_arg_0 == mask_SORT_8; [L865] SORT_1 var_80_arg_0 = var_79; [L866] SORT_1 var_80_arg_1 = var_27; [L867] SORT_6 var_80 = ((SORT_6)var_80_arg_0 << 1) | var_80_arg_1; [L868] SORT_1 var_91_arg_0 = var_90; [L869] SORT_6 var_91_arg_1 = var_80; [L870] SORT_6 var_91_arg_2 = var_37; [L871] EXPR var_91_arg_0 ? var_91_arg_1 : var_91_arg_2 [L871] SORT_6 var_91 = var_91_arg_0 ? var_91_arg_1 : var_91_arg_2; [L872] SORT_1 var_111_arg_0 = var_110; [L873] SORT_6 var_111_arg_1 = var_94; [L874] SORT_6 var_111_arg_2 = var_91; [L875] EXPR var_111_arg_0 ? var_111_arg_1 : var_111_arg_2 [L875] SORT_6 var_111 = var_111_arg_0 ? var_111_arg_1 : var_111_arg_2; [L876] SORT_1 var_278_arg_0 = var_277; [L877] SORT_6 var_278_arg_1 = var_37; [L878] SORT_6 var_278_arg_2 = var_111; [L879] EXPR var_278_arg_0 ? var_278_arg_1 : var_278_arg_2 [L879] SORT_6 var_278 = var_278_arg_0 ? var_278_arg_1 : var_278_arg_2; [L880] var_278 = var_278 & mask_SORT_6 [L881] SORT_145 var_280_arg_0 = var_279; [L882] SORT_6 var_280_arg_1 = var_278; [L883] SORT_17 var_280 = ((SORT_17)var_280_arg_0 << 2) | var_280_arg_1; [L884] SORT_1 var_40_arg_0 = state_34; [L885] SORT_6 var_40_arg_1 = state_38; [L886] SORT_6 var_40_arg_2 = input_19; [L887] EXPR var_40_arg_0 ? var_40_arg_1 : var_40_arg_2 [L887] SORT_6 var_40 = var_40_arg_0 ? var_40_arg_1 : var_40_arg_2; [L888] SORT_6 var_43_arg_0 = var_40; [L889] SORT_1 var_43 = var_43_arg_0 >> 0; [L890] var_43 = var_43 & mask_SORT_1 [L891] SORT_6 var_41_arg_0 = var_40; [L892] SORT_1 var_41 = var_41_arg_0 >> 1; [L893] var_41 = var_41 & mask_SORT_1 [L894] SORT_1 var_36_arg_0 = state_34; [L895] SORT_17 var_36_arg_1 = state_32; [L896] SORT_17 var_36_arg_2 = input_18; [L897] EXPR var_36_arg_0 ? var_36_arg_1 : var_36_arg_2 [L897] SORT_17 var_36 = var_36_arg_0 ? var_36_arg_1 : var_36_arg_2; [L898] SORT_1 var_42_arg_0 = var_41; [L899] SORT_17 var_42_arg_1 = var_36; [L900] SORT_17 var_42_arg_2 = var_31; [L901] EXPR var_42_arg_0 ? var_42_arg_1 : var_42_arg_2 [L901] SORT_17 var_42 = var_42_arg_0 ? var_42_arg_1 : var_42_arg_2; [L902] SORT_1 var_44_arg_0 = var_43; [L903] SORT_17 var_44_arg_1 = var_31; [L904] SORT_17 var_44_arg_2 = var_42; [L905] EXPR var_44_arg_0 ? var_44_arg_1 : var_44_arg_2 [L905] SORT_17 var_44 = var_44_arg_0 ? var_44_arg_1 : var_44_arg_2; [L906] SORT_1 var_298_arg_0 = var_297; [L907] SORT_17 var_298_arg_1 = var_280; [L908] SORT_17 var_298_arg_2 = var_44; [L909] EXPR var_298_arg_0 ? var_298_arg_1 : var_298_arg_2 [L909] SORT_17 var_298 = var_298_arg_0 ? var_298_arg_1 : var_298_arg_2; [L910] var_298 = var_298 & mask_SORT_17 [L911] SORT_17 var_299_arg_0 = var_298; [L912] SORT_17 var_299_arg_1 = var_31; [L913] SORT_1 var_299 = var_299_arg_0 == var_299_arg_1; [L914] SORT_1 var_302_arg_0 = state_34; [L915] SORT_17 var_302_arg_1 = state_300; [L916] SORT_17 var_302_arg_2 = input_18; [L917] EXPR var_302_arg_0 ? var_302_arg_1 : var_302_arg_2 [L917] SORT_17 var_302 = var_302_arg_0 ? var_302_arg_1 : var_302_arg_2; [L918] SORT_1 var_303_arg_0 = var_41; [L919] SORT_17 var_303_arg_1 = var_302; [L920] SORT_17 var_303_arg_2 = var_31; [L921] EXPR var_303_arg_0 ? var_303_arg_1 : var_303_arg_2 [L921] SORT_17 var_303 = var_303_arg_0 ? var_303_arg_1 : var_303_arg_2; [L922] SORT_1 var_304_arg_0 = var_43; [L923] SORT_17 var_304_arg_1 = var_31; [L924] SORT_17 var_304_arg_2 = var_303; [L925] EXPR var_304_arg_0 ? var_304_arg_1 : var_304_arg_2 [L925] SORT_17 var_304 = var_304_arg_0 ? var_304_arg_1 : var_304_arg_2; [L926] SORT_1 var_305_arg_0 = var_297; [L927] SORT_17 var_305_arg_1 = var_280; [L928] SORT_17 var_305_arg_2 = var_304; [L929] EXPR var_305_arg_0 ? var_305_arg_1 : var_305_arg_2 [L929] SORT_17 var_305 = var_305_arg_0 ? var_305_arg_1 : var_305_arg_2; [L930] var_305 = var_305 & mask_SORT_17 [L931] SORT_17 var_306_arg_0 = var_305; [L932] SORT_17 var_306_arg_1 = var_31; [L933] SORT_1 var_306 = var_306_arg_0 == var_306_arg_1; [L934] SORT_1 var_307_arg_0 = var_299; [L935] SORT_1 var_307_arg_1 = var_306; [L936] SORT_1 var_307 = var_307_arg_0 == var_307_arg_1; [L937] SORT_1 var_308_arg_0 = var_30; [L938] SORT_1 var_308_arg_1 = var_307; [L939] SORT_1 var_308 = var_308_arg_0 | var_308_arg_1; [L940] SORT_1 var_311_arg_0 = var_308; [L941] SORT_1 var_311 = ~var_311_arg_0; [L942] SORT_1 var_312_arg_0 = var_45; [L943] SORT_1 var_312_arg_1 = var_311; [L944] SORT_1 var_312 = var_312_arg_0 & var_312_arg_1; [L945] var_312 = var_312 & mask_SORT_1 [L946] SORT_1 bad_313_arg_0 = var_312; [L947] CALL __VERIFIER_assert(!(bad_313_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: 69.7s, 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, 38.6s 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 04:12:53,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/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_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/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_28256fe9-bef2-42fb-b2d5-aeb22c03745f/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 407f079cfeef5f20438e38393e8e31b0b38db95f65d747092bdbd6427eef85bc --- 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 04:12:56,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:12:56,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:12:56,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:12:56,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:12:56,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:12:56,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:12:56,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:12:56,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:12:56,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:12:56,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:12:56,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:12:56,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:12:56,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:12:56,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:12:56,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:12:56,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:12:56,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:12:56,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:12:56,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:12:56,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:12:56,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:12:56,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:12:56,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:12:56,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:12:56,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:12:56,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:12:56,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:12:56,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:12:56,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:12:56,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:12:56,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:12:56,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:12:56,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:12:56,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:12:56,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:12:56,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:12:56,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:12:56,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:12:56,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:12:56,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:12:56,134 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 04:12:56,182 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:12:56,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:12:56,190 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:12:56,190 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:12:56,191 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:12:56,192 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:12:56,192 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:12:56,192 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:12:56,192 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:12:56,193 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:12:56,194 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:12:56,194 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:12:56,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:12:56,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:12:56,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:12:56,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:12:56,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:12:56,197 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 04:12:56,197 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 04:12:56,197 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 04:12:56,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:12:56,198 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:12:56,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:12:56,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:12:56,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 04:12:56,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:12:56,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:12:56,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:12:56,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:12:56,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:12:56,200 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 04:12:56,200 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 04:12:56,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:12:56,201 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:12:56,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 04:12:56,201 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_28256fe9-bef2-42fb-b2d5-aeb22c03745f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 407f079cfeef5f20438e38393e8e31b0b38db95f65d747092bdbd6427eef85bc [2022-11-03 04:12:56,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:12:56,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:12:56,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:12:56,682 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:12:56,683 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:12:56,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c [2022-11-03 04:12:56,778 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/data/b2ecf0a3c/ee59baf7f1f94aac9619b47fe7a94d0c/FLAGf396f02e1 [2022-11-03 04:12:57,587 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:12:57,588 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c [2022-11-03 04:12:57,604 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/data/b2ecf0a3c/ee59baf7f1f94aac9619b47fe7a94d0c/FLAGf396f02e1 [2022-11-03 04:12:57,812 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/data/b2ecf0a3c/ee59baf7f1f94aac9619b47fe7a94d0c [2022-11-03 04:12:57,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:12:57,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:12:57,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:12:57,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:12:57,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:12:57,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:12:57" (1/1) ... [2022-11-03 04:12:57,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c25b5b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:57, skipping insertion in model container [2022-11-03 04:12:57,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:12:57" (1/1) ... [2022-11-03 04:12:57,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:12:57,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:12:58,140 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_28256fe9-bef2-42fb-b2d5-aeb22c03745f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c[1107,1120] [2022-11-03 04:12:58,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:12:58,626 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:12:58,640 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_28256fe9-bef2-42fb-b2d5-aeb22c03745f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c[1107,1120] [2022-11-03 04:12:58,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:12:58,797 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:12:58,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:58 WrapperNode [2022-11-03 04:12:58,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:12:58,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:12:58,800 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:12:58,800 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:12:58,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:58" (1/1) ... [2022-11-03 04:12:58,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:58" (1/1) ... [2022-11-03 04:12:59,051 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1809 [2022-11-03 04:12:59,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:12:59,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:12:59,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:12:59,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:12:59,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:58" (1/1) ... [2022-11-03 04:12:59,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:58" (1/1) ... [2022-11-03 04:12:59,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:58" (1/1) ... [2022-11-03 04:12:59,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:58" (1/1) ... [2022-11-03 04:12:59,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:58" (1/1) ... [2022-11-03 04:12:59,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:58" (1/1) ... [2022-11-03 04:12:59,172 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:58" (1/1) ... [2022-11-03 04:12:59,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:58" (1/1) ... [2022-11-03 04:12:59,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:12:59,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:12:59,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:12:59,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:12:59,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:58" (1/1) ... [2022-11-03 04:12:59,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:12:59,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:12:59,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:12:59,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:12:59,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:12:59,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:12:59,923 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:12:59,925 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:13:01,628 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:13:01,640 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:13:01,640 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 04:13:01,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:13:01 BoogieIcfgContainer [2022-11-03 04:13:01,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:13:01,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:13:01,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:13:01,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:13:01,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:12:57" (1/3) ... [2022-11-03 04:13:01,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd78ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:13:01, skipping insertion in model container [2022-11-03 04:13:01,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:58" (2/3) ... [2022-11-03 04:13:01,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd78ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:13:01, skipping insertion in model container [2022-11-03 04:13:01,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:13:01" (3/3) ... [2022-11-03 04:13:01,654 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal20.c [2022-11-03 04:13:01,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:13:01,678 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:13:01,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:13:01,776 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;@65ae45de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:13:01,777 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:13:01,782 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 207 states have (on average 1.497584541062802) internal successors, (310), 208 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:13:01,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:01,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:01,795 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] [2022-11-03 04:13:01,795 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:01,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:01,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1747459213, now seen corresponding path program 1 times [2022-11-03 04:13:01,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:01,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273704904] [2022-11-03 04:13:01,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:01,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:01,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:01,823 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:01,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 04:13:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:02,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:13:02,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:03,036 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 04:13:03,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:03,037 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:03,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273704904] [2022-11-03 04:13:03,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273704904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:03,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:03,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:13:03,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015919752] [2022-11-03 04:13:03,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:03,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:13:03,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:03,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:13:03,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:13:03,107 INFO L87 Difference]: Start difference. First operand has 209 states, 207 states have (on average 1.497584541062802) internal successors, (310), 208 states have internal predecessors, (310), 0 states have call successors, (0), 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 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:03,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:03,568 INFO L93 Difference]: Finished difference Result 818 states and 1225 transitions. [2022-11-03 04:13:03,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:13:03,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:03,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:03,607 INFO L225 Difference]: With dead ends: 818 [2022-11-03 04:13:03,618 INFO L226 Difference]: Without dead ends: 611 [2022-11-03 04:13:03,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 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 04:13:03,635 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 2092 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2092 SdHoareTripleChecker+Valid, 1193 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 04:13:03,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2092 Valid, 1193 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:13:03,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-11-03 04:13:03,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 207. [2022-11-03 04:13:03,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4854368932038835) internal successors, (306), 206 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:13:03,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 306 transitions. [2022-11-03 04:13:03,708 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 306 transitions. Word has length 109 [2022-11-03 04:13:03,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:03,709 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 306 transitions. [2022-11-03 04:13:03,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:03,710 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 306 transitions. [2022-11-03 04:13:03,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:03,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:03,714 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] [2022-11-03 04:13:03,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:03,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:03,929 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:03,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:03,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1158214069, now seen corresponding path program 1 times [2022-11-03 04:13:03,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:03,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604990973] [2022-11-03 04:13:03,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:03,933 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:03,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:03,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:03,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 04:13:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:04,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:13:04,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:04,917 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 04:13:04,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:04,918 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:04,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604990973] [2022-11-03 04:13:04,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604990973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:04,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:04,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:13:04,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943945855] [2022-11-03 04:13:04,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:04,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:13:04,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:04,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:13:04,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:13:04,922 INFO L87 Difference]: Start difference. First operand 207 states and 306 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:05,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:05,170 INFO L93 Difference]: Finished difference Result 820 states and 1214 transitions. [2022-11-03 04:13:05,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:13:05,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:05,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:05,174 INFO L225 Difference]: With dead ends: 820 [2022-11-03 04:13:05,175 INFO L226 Difference]: Without dead ends: 615 [2022-11-03 04:13:05,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 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 04:13:05,178 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 2084 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2084 SdHoareTripleChecker+Valid, 1195 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 04:13:05,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2084 Valid, 1195 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:13:05,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-11-03 04:13:05,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 211. [2022-11-03 04:13:05,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.480952380952381) internal successors, (311), 210 states have internal predecessors, (311), 0 states have call successors, (0), 0 states 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 04:13:05,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 311 transitions. [2022-11-03 04:13:05,196 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 311 transitions. Word has length 109 [2022-11-03 04:13:05,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:05,196 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 311 transitions. [2022-11-03 04:13:05,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:05,197 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 311 transitions. [2022-11-03 04:13:05,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:05,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:05,200 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] [2022-11-03 04:13:05,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-03 04:13:05,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:05,423 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:05,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:05,423 INFO L85 PathProgramCache]: Analyzing trace with hash 739282697, now seen corresponding path program 1 times [2022-11-03 04:13:05,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:05,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867117389] [2022-11-03 04:13:05,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:05,427 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:05,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:05,430 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:05,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 04:13:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:06,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:13:06,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:06,337 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 04:13:06,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:06,338 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:06,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867117389] [2022-11-03 04:13:06,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867117389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:06,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:06,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:13:06,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978932015] [2022-11-03 04:13:06,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:06,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:13:06,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:06,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:13:06,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:13:06,349 INFO L87 Difference]: Start difference. First operand 211 states and 311 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:06,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:06,614 INFO L93 Difference]: Finished difference Result 826 states and 1220 transitions. [2022-11-03 04:13:06,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:13:06,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:06,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:06,618 INFO L225 Difference]: With dead ends: 826 [2022-11-03 04:13:06,618 INFO L226 Difference]: Without dead ends: 617 [2022-11-03 04:13:06,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 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 04:13:06,620 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 2078 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 1197 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 04:13:06,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2078 Valid, 1197 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:13:06,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-11-03 04:13:06,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 213. [2022-11-03 04:13:06,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.4764150943396226) internal successors, (313), 212 states have internal predecessors, (313), 0 states have call successors, (0), 0 states 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 04:13:06,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 313 transitions. [2022-11-03 04:13:06,645 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 313 transitions. Word has length 109 [2022-11-03 04:13:06,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:06,647 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 313 transitions. [2022-11-03 04:13:06,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:06,648 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 313 transitions. [2022-11-03 04:13:06,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:06,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:06,650 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] [2022-11-03 04:13:06,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:06,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:06,867 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:06,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:06,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1167120569, now seen corresponding path program 1 times [2022-11-03 04:13:06,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:06,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102785765] [2022-11-03 04:13:06,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:06,870 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:06,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:06,871 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:06,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 04:13:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:07,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:13:07,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:07,861 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 04:13:07,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:07,862 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:07,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102785765] [2022-11-03 04:13:07,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102785765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:07,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:07,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:13:07,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609311975] [2022-11-03 04:13:07,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:07,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:13:07,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:07,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:13:07,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:13:07,869 INFO L87 Difference]: Start difference. First operand 213 states and 313 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:08,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:08,704 INFO L93 Difference]: Finished difference Result 841 states and 1238 transitions. [2022-11-03 04:13:08,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 04:13:08,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:08,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:08,708 INFO L225 Difference]: With dead ends: 841 [2022-11-03 04:13:08,708 INFO L226 Difference]: Without dead ends: 630 [2022-11-03 04:13:08,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:13:08,710 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 2388 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2388 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:13:08,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2388 Valid, 1704 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 04:13:08,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2022-11-03 04:13:08,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 215. [2022-11-03 04:13:08,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.47196261682243) internal successors, (315), 214 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 04:13:08,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 315 transitions. [2022-11-03 04:13:08,724 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 315 transitions. Word has length 109 [2022-11-03 04:13:08,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:08,725 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 315 transitions. [2022-11-03 04:13:08,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:08,725 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 315 transitions. [2022-11-03 04:13:08,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:08,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:08,749 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] [2022-11-03 04:13:08,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:08,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:08,968 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:08,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:08,969 INFO L85 PathProgramCache]: Analyzing trace with hash 2071115525, now seen corresponding path program 1 times [2022-11-03 04:13:08,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:08,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406544751] [2022-11-03 04:13:08,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:08,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:08,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:08,972 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:08,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 04:13:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:09,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 04:13:09,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:09,908 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 04:13:09,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:09,908 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:09,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406544751] [2022-11-03 04:13:09,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406544751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:09,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:09,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 04:13:09,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226074573] [2022-11-03 04:13:09,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:09,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 04:13:09,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:09,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 04:13:09,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-03 04:13:09,912 INFO L87 Difference]: Start difference. First operand 215 states and 315 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:11,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:11,528 INFO L93 Difference]: Finished difference Result 1083 states and 1580 transitions. [2022-11-03 04:13:11,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 04:13:11,529 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:11,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:11,533 INFO L225 Difference]: With dead ends: 1083 [2022-11-03 04:13:11,533 INFO L226 Difference]: Without dead ends: 870 [2022-11-03 04:13:11,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=384, Invalid=1022, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 04:13:11,535 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 5593 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5593 SdHoareTripleChecker+Valid, 2554 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:13:11,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5593 Valid, 2554 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 04:13:11,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2022-11-03 04:13:11,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 225. [2022-11-03 04:13:11,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.4553571428571428) internal successors, (326), 224 states have internal predecessors, (326), 0 states have call successors, (0), 0 states 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 04:13:11,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 326 transitions. [2022-11-03 04:13:11,549 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 326 transitions. Word has length 109 [2022-11-03 04:13:11,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:11,549 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 326 transitions. [2022-11-03 04:13:11,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:11,550 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 326 transitions. [2022-11-03 04:13:11,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:11,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:11,552 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] [2022-11-03 04:13:11,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:11,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:11,765 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:11,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:11,766 INFO L85 PathProgramCache]: Analyzing trace with hash 2099615815, now seen corresponding path program 1 times [2022-11-03 04:13:11,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:11,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351031337] [2022-11-03 04:13:11,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:11,767 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:11,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:11,769 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:11,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 04:13:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:12,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 04:13:12,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:12,929 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 04:13:12,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:12,930 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:12,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351031337] [2022-11-03 04:13:12,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351031337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:12,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:12,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:13:12,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207909348] [2022-11-03 04:13:12,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:12,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:13:12,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:12,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:13:12,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:13:12,933 INFO L87 Difference]: Start difference. First operand 225 states and 326 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:13,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:13,535 INFO L93 Difference]: Finished difference Result 868 states and 1265 transitions. [2022-11-03 04:13:13,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:13:13,536 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:13,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:13,539 INFO L225 Difference]: With dead ends: 868 [2022-11-03 04:13:13,539 INFO L226 Difference]: Without dead ends: 645 [2022-11-03 04:13:13,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 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 04:13:13,541 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 2062 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:13:13,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2062 Valid, 1163 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:13:13,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-11-03 04:13:13,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 231. [2022-11-03 04:13:13,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.4521739130434783) internal successors, (334), 230 states have internal predecessors, (334), 0 states have call successors, (0), 0 states 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 04:13:13,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 334 transitions. [2022-11-03 04:13:13,555 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 334 transitions. Word has length 109 [2022-11-03 04:13:13,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:13,562 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 334 transitions. [2022-11-03 04:13:13,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:13,562 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 334 transitions. [2022-11-03 04:13:13,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:13,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:13,564 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] [2022-11-03 04:13:13,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:13,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:13,783 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:13,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:13,783 INFO L85 PathProgramCache]: Analyzing trace with hash -318288251, now seen corresponding path program 1 times [2022-11-03 04:13:13,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:13,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233236997] [2022-11-03 04:13:13,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:13,785 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:13,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:13,787 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:13,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 04:13:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:14,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:13:14,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:14,668 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 04:13:14,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:14,669 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:14,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233236997] [2022-11-03 04:13:14,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233236997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:14,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:14,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:13:14,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168686273] [2022-11-03 04:13:14,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:14,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:13:14,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:14,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:13:14,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:13:14,673 INFO L87 Difference]: Start difference. First operand 231 states and 334 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:14,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:14,936 INFO L93 Difference]: Finished difference Result 962 states and 1385 transitions. [2022-11-03 04:13:14,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:13:14,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:14,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:14,949 INFO L225 Difference]: With dead ends: 962 [2022-11-03 04:13:14,949 INFO L226 Difference]: Without dead ends: 733 [2022-11-03 04:13:14,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 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 04:13:14,951 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 2047 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2047 SdHoareTripleChecker+Valid, 1301 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 04:13:14,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2047 Valid, 1301 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:13:14,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-03 04:13:14,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 233. [2022-11-03 04:13:14,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.4482758620689655) internal successors, (336), 232 states have internal predecessors, (336), 0 states have call successors, (0), 0 states 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 04:13:14,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 336 transitions. [2022-11-03 04:13:14,969 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 336 transitions. Word has length 109 [2022-11-03 04:13:14,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:14,970 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 336 transitions. [2022-11-03 04:13:14,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:14,970 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 336 transitions. [2022-11-03 04:13:14,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:14,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:14,972 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] [2022-11-03 04:13:14,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:15,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:15,192 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:15,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:15,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2018104259, now seen corresponding path program 1 times [2022-11-03 04:13:15,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:15,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259904095] [2022-11-03 04:13:15,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:15,194 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:15,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:15,196 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:15,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 04:13:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:15,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:13:15,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:16,065 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 04:13:16,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:16,066 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:16,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259904095] [2022-11-03 04:13:16,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259904095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:16,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:16,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:13:16,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022256188] [2022-11-03 04:13:16,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:16,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:13:16,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:16,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:13:16,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:13:16,070 INFO L87 Difference]: Start difference. First operand 233 states and 336 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:16,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:16,384 INFO L93 Difference]: Finished difference Result 968 states and 1391 transitions. [2022-11-03 04:13:16,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:13:16,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:16,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:16,389 INFO L225 Difference]: With dead ends: 968 [2022-11-03 04:13:16,389 INFO L226 Difference]: Without dead ends: 737 [2022-11-03 04:13:16,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 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 04:13:16,391 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 2039 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2039 SdHoareTripleChecker+Valid, 1307 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 04:13:16,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2039 Valid, 1307 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:13:16,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-11-03 04:13:16,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 237. [2022-11-03 04:13:16,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.444915254237288) internal successors, (341), 236 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 04:13:16,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 341 transitions. [2022-11-03 04:13:16,429 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 341 transitions. Word has length 109 [2022-11-03 04:13:16,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:16,430 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 341 transitions. [2022-11-03 04:13:16,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:16,431 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 341 transitions. [2022-11-03 04:13:16,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:16,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:16,435 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] [2022-11-03 04:13:16,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:16,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:16,656 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:16,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:16,656 INFO L85 PathProgramCache]: Analyzing trace with hash -710105087, now seen corresponding path program 1 times [2022-11-03 04:13:16,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:16,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634153585] [2022-11-03 04:13:16,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:16,657 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:16,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:16,658 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:16,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 04:13:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:17,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:13:17,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:17,443 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 04:13:17,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:17,443 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:17,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634153585] [2022-11-03 04:13:17,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634153585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:17,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:17,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:13:17,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203982914] [2022-11-03 04:13:17,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:17,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:13:17,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:17,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:13:17,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:13:17,447 INFO L87 Difference]: Start difference. First operand 237 states and 341 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:17,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:17,780 INFO L93 Difference]: Finished difference Result 974 states and 1397 transitions. [2022-11-03 04:13:17,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:13:17,781 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:17,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:17,785 INFO L225 Difference]: With dead ends: 974 [2022-11-03 04:13:17,785 INFO L226 Difference]: Without dead ends: 739 [2022-11-03 04:13:17,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 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 04:13:17,786 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 2033 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2033 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:13:17,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2033 Valid, 1310 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:13:17,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-11-03 04:13:17,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 239. [2022-11-03 04:13:17,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.4411764705882353) internal successors, (343), 238 states have internal predecessors, (343), 0 states have call successors, (0), 0 states 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 04:13:17,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 343 transitions. [2022-11-03 04:13:17,802 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 343 transitions. Word has length 109 [2022-11-03 04:13:17,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:17,802 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 343 transitions. [2022-11-03 04:13:17,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:17,803 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 343 transitions. [2022-11-03 04:13:17,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:17,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:17,804 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] [2022-11-03 04:13:17,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:18,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:18,029 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:18,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:18,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1852607553, now seen corresponding path program 1 times [2022-11-03 04:13:18,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:18,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308309631] [2022-11-03 04:13:18,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:18,032 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:18,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:18,033 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:18,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 04:13:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:18,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:13:18,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:18,837 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 04:13:18,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:18,837 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:18,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308309631] [2022-11-03 04:13:18,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308309631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:18,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:18,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:13:18,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197125894] [2022-11-03 04:13:18,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:18,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:13:18,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:18,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:13:18,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:13:18,845 INFO L87 Difference]: Start difference. First operand 239 states and 343 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:19,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:19,121 INFO L93 Difference]: Finished difference Result 982 states and 1406 transitions. [2022-11-03 04:13:19,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:13:19,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:19,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:19,125 INFO L225 Difference]: With dead ends: 982 [2022-11-03 04:13:19,125 INFO L226 Difference]: Without dead ends: 745 [2022-11-03 04:13:19,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 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 04:13:19,127 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 2023 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2023 SdHoareTripleChecker+Valid, 1319 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 04:13:19,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2023 Valid, 1319 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:13:19,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-11-03 04:13:19,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 245. [2022-11-03 04:13:19,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.4385245901639345) internal successors, (351), 244 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 04:13:19,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 351 transitions. [2022-11-03 04:13:19,142 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 351 transitions. Word has length 109 [2022-11-03 04:13:19,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:19,143 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 351 transitions. [2022-11-03 04:13:19,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:19,143 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 351 transitions. [2022-11-03 04:13:19,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:19,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:19,145 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] [2022-11-03 04:13:19,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:19,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:19,357 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:19,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:19,357 INFO L85 PathProgramCache]: Analyzing trace with hash -965384707, now seen corresponding path program 1 times [2022-11-03 04:13:19,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:19,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227121271] [2022-11-03 04:13:19,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:19,359 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:19,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:19,360 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:19,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 04:13:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:19,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:13:19,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:20,152 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 04:13:20,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:20,153 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:20,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227121271] [2022-11-03 04:13:20,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227121271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:20,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:20,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:13:20,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560945537] [2022-11-03 04:13:20,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:20,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:13:20,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:20,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:13:20,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:13:20,156 INFO L87 Difference]: Start difference. First operand 245 states and 351 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:20,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:20,544 INFO L93 Difference]: Finished difference Result 990 states and 1415 transitions. [2022-11-03 04:13:20,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:13:20,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:20,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:20,548 INFO L225 Difference]: With dead ends: 990 [2022-11-03 04:13:20,548 INFO L226 Difference]: Without dead ends: 747 [2022-11-03 04:13:20,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 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 04:13:20,549 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 2017 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2017 SdHoareTripleChecker+Valid, 1318 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 04:13:20,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2017 Valid, 1318 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:13:20,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-11-03 04:13:20,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 247. [2022-11-03 04:13:20,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 1.434959349593496) internal successors, (353), 246 states have internal predecessors, (353), 0 states have call successors, (0), 0 states 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 04:13:20,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 353 transitions. [2022-11-03 04:13:20,563 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 353 transitions. Word has length 109 [2022-11-03 04:13:20,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:20,564 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 353 transitions. [2022-11-03 04:13:20,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:20,564 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 353 transitions. [2022-11-03 04:13:20,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:20,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:20,566 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] [2022-11-03 04:13:20,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:20,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:20,783 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:20,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:20,784 INFO L85 PathProgramCache]: Analyzing trace with hash -888483909, now seen corresponding path program 1 times [2022-11-03 04:13:20,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:20,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311388960] [2022-11-03 04:13:20,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:20,785 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:20,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:20,787 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:20,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 04:13:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:21,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:13:21,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:21,764 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 04:13:21,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:21,765 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:21,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311388960] [2022-11-03 04:13:21,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311388960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:21,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:21,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:13:21,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626953712] [2022-11-03 04:13:21,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:21,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:13:21,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:21,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:13:21,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:13:21,795 INFO L87 Difference]: Start difference. First operand 247 states and 353 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:22,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:22,344 INFO L93 Difference]: Finished difference Result 994 states and 1418 transitions. [2022-11-03 04:13:22,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:13:22,345 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:22,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:22,348 INFO L225 Difference]: With dead ends: 994 [2022-11-03 04:13:22,349 INFO L226 Difference]: Without dead ends: 749 [2022-11-03 04:13:22,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 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 04:13:22,350 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 2011 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 1253 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 04:13:22,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2011 Valid, 1253 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 04:13:22,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-11-03 04:13:22,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 249. [2022-11-03 04:13:22,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.4314516129032258) internal successors, (355), 248 states have internal predecessors, (355), 0 states have call successors, (0), 0 states 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 04:13:22,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 355 transitions. [2022-11-03 04:13:22,366 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 355 transitions. Word has length 109 [2022-11-03 04:13:22,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:22,366 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 355 transitions. [2022-11-03 04:13:22,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:22,367 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 355 transitions. [2022-11-03 04:13:22,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:22,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:22,368 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] [2022-11-03 04:13:22,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-11-03 04:13:22,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:22,588 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:22,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:22,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1019973881, now seen corresponding path program 1 times [2022-11-03 04:13:22,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:22,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137512648] [2022-11-03 04:13:22,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:22,589 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:22,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:22,590 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:22,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 04:13:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:23,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:13:23,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:23,392 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 04:13:23,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:23,392 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:23,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137512648] [2022-11-03 04:13:23,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137512648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:23,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:23,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:13:23,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944742636] [2022-11-03 04:13:23,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:23,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:13:23,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:23,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:13:23,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:13:23,395 INFO L87 Difference]: Start difference. First operand 249 states and 355 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:23,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:23,716 INFO L93 Difference]: Finished difference Result 998 states and 1421 transitions. [2022-11-03 04:13:23,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:13:23,717 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:23,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:23,719 INFO L225 Difference]: With dead ends: 998 [2022-11-03 04:13:23,719 INFO L226 Difference]: Without dead ends: 751 [2022-11-03 04:13:23,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 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 04:13:23,721 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 2005 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 1324 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 04:13:23,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2005 Valid, 1324 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:13:23,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-11-03 04:13:23,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 251. [2022-11-03 04:13:23,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.428) internal successors, (357), 250 states have internal predecessors, (357), 0 states have call successors, (0), 0 states 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 04:13:23,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 357 transitions. [2022-11-03 04:13:23,757 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 357 transitions. Word has length 109 [2022-11-03 04:13:23,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:23,757 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 357 transitions. [2022-11-03 04:13:23,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:23,757 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 357 transitions. [2022-11-03 04:13:23,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:23,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:23,759 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] [2022-11-03 04:13:23,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:23,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:23,975 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:23,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:23,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1973914039, now seen corresponding path program 1 times [2022-11-03 04:13:23,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:23,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271132092] [2022-11-03 04:13:23,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:23,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:23,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:23,978 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:23,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 04:13:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:24,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:13:24,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:24,763 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 04:13:24,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:24,763 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:24,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271132092] [2022-11-03 04:13:24,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271132092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:24,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:24,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:13:24,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131377149] [2022-11-03 04:13:24,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:24,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:13:24,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:24,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:13:24,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:13:24,766 INFO L87 Difference]: Start difference. First operand 251 states and 357 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:25,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:25,117 INFO L93 Difference]: Finished difference Result 1002 states and 1424 transitions. [2022-11-03 04:13:25,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:13:25,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:25,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:25,121 INFO L225 Difference]: With dead ends: 1002 [2022-11-03 04:13:25,122 INFO L226 Difference]: Without dead ends: 753 [2022-11-03 04:13:25,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 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 04:13:25,124 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1999 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1999 SdHoareTripleChecker+Valid, 1327 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 04:13:25,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1999 Valid, 1327 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:13:25,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-11-03 04:13:25,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 253. [2022-11-03 04:13:25,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.4246031746031746) internal successors, (359), 252 states have internal predecessors, (359), 0 states have call successors, (0), 0 states 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 04:13:25,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 359 transitions. [2022-11-03 04:13:25,139 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 359 transitions. Word has length 109 [2022-11-03 04:13:25,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:25,140 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 359 transitions. [2022-11-03 04:13:25,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:25,140 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 359 transitions. [2022-11-03 04:13:25,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:25,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:25,142 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] [2022-11-03 04:13:25,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:25,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:25,357 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:25,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:25,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1241946613, now seen corresponding path program 1 times [2022-11-03 04:13:25,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:25,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613413083] [2022-11-03 04:13:25,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:25,358 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:25,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:25,359 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:25,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 04:13:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:25,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:13:25,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:26,373 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 04:13:26,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:26,374 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:26,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613413083] [2022-11-03 04:13:26,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613413083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:26,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:26,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:13:26,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412856015] [2022-11-03 04:13:26,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:26,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:13:26,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:26,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:13:26,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:13:26,381 INFO L87 Difference]: Start difference. First operand 253 states and 359 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:26,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:26,996 INFO L93 Difference]: Finished difference Result 1006 states and 1427 transitions. [2022-11-03 04:13:26,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:13:26,997 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:26,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:27,000 INFO L225 Difference]: With dead ends: 1006 [2022-11-03 04:13:27,000 INFO L226 Difference]: Without dead ends: 755 [2022-11-03 04:13:27,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 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 04:13:27,002 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 1993 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 1262 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 04:13:27,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1993 Valid, 1262 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 04:13:27,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-03 04:13:27,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 255. [2022-11-03 04:13:27,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.421259842519685) internal successors, (361), 254 states have internal predecessors, (361), 0 states have call successors, (0), 0 states 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 04:13:27,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 361 transitions. [2022-11-03 04:13:27,017 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 361 transitions. Word has length 109 [2022-11-03 04:13:27,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:27,017 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 361 transitions. [2022-11-03 04:13:27,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:27,018 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 361 transitions. [2022-11-03 04:13:27,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:27,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:27,019 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] [2022-11-03 04:13:27,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:27,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:27,233 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:27,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:27,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1187553715, now seen corresponding path program 1 times [2022-11-03 04:13:27,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:27,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381608488] [2022-11-03 04:13:27,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:27,235 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:27,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:27,237 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:27,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 04:13:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:27,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 04:13:27,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:28,785 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 04:13:28,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:28,786 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:28,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381608488] [2022-11-03 04:13:28,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381608488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:28,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:28,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:13:28,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274443095] [2022-11-03 04:13:28,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:28,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:13:28,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:28,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:13:28,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:13:28,789 INFO L87 Difference]: Start difference. First operand 255 states and 361 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:29,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:29,343 INFO L93 Difference]: Finished difference Result 1010 states and 1430 transitions. [2022-11-03 04:13:29,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:13:29,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:29,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:29,356 INFO L225 Difference]: With dead ends: 1010 [2022-11-03 04:13:29,356 INFO L226 Difference]: Without dead ends: 757 [2022-11-03 04:13:29,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 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 04:13:29,359 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 1987 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1987 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:13:29,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1987 Valid, 1289 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:13:29,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-11-03 04:13:29,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 257. [2022-11-03 04:13:29,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.41796875) internal successors, (363), 256 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:13:29,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 363 transitions. [2022-11-03 04:13:29,382 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 363 transitions. Word has length 109 [2022-11-03 04:13:29,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:29,382 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 363 transitions. [2022-11-03 04:13:29,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:29,383 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 363 transitions. [2022-11-03 04:13:29,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:29,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:29,385 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] [2022-11-03 04:13:29,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:29,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:29,604 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:29,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:29,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1866825969, now seen corresponding path program 1 times [2022-11-03 04:13:29,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:29,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504013681] [2022-11-03 04:13:29,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:29,606 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:29,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:29,608 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:29,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 04:13:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:30,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:13:30,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:30,547 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 04:13:30,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:30,548 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:30,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504013681] [2022-11-03 04:13:30,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504013681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:30,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:30,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:13:30,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706543821] [2022-11-03 04:13:30,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:30,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:13:30,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:30,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:13:30,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:13:30,551 INFO L87 Difference]: Start difference. First operand 257 states and 363 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:30,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:30,951 INFO L93 Difference]: Finished difference Result 840 states and 1175 transitions. [2022-11-03 04:13:30,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:13:30,952 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:30,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:30,954 INFO L225 Difference]: With dead ends: 840 [2022-11-03 04:13:30,954 INFO L226 Difference]: Without dead ends: 585 [2022-11-03 04:13:30,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:13:30,956 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 572 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:13:30,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 1684 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 15 Unchecked, 0.3s Time] [2022-11-03 04:13:30,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-11-03 04:13:30,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 331. [2022-11-03 04:13:30,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 1.3757575757575757) internal successors, (454), 330 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 04:13:30,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 454 transitions. [2022-11-03 04:13:30,976 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 454 transitions. Word has length 109 [2022-11-03 04:13:30,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:30,976 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 454 transitions. [2022-11-03 04:13:30,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:30,977 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 454 transitions. [2022-11-03 04:13:30,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:30,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:30,979 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] [2022-11-03 04:13:30,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:31,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:31,199 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:31,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:31,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1665002035, now seen corresponding path program 1 times [2022-11-03 04:13:31,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:31,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035396826] [2022-11-03 04:13:31,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:31,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:31,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:31,202 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:31,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 04:13:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:31,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:13:31,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:32,012 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 04:13:32,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:32,013 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:32,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035396826] [2022-11-03 04:13:32,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035396826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:32,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:32,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:13:32,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131669462] [2022-11-03 04:13:32,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:32,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:13:32,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:32,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:13:32,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:13:32,019 INFO L87 Difference]: Start difference. First operand 331 states and 454 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:32,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:32,512 INFO L93 Difference]: Finished difference Result 1001 states and 1412 transitions. [2022-11-03 04:13:32,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:13:32,513 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:32,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:32,516 INFO L225 Difference]: With dead ends: 1001 [2022-11-03 04:13:32,516 INFO L226 Difference]: Without dead ends: 746 [2022-11-03 04:13:32,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:13:32,520 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1872 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:13:32,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 1298 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:13:32,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-11-03 04:13:32,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 335. [2022-11-03 04:13:32,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.374251497005988) internal successors, (459), 334 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 04:13:32,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 459 transitions. [2022-11-03 04:13:32,552 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 459 transitions. Word has length 109 [2022-11-03 04:13:32,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:32,553 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 459 transitions. [2022-11-03 04:13:32,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:32,553 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 459 transitions. [2022-11-03 04:13:32,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:32,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:32,555 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] [2022-11-03 04:13:32,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:32,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:32,769 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:32,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:32,770 INFO L85 PathProgramCache]: Analyzing trace with hash 2098731121, now seen corresponding path program 1 times [2022-11-03 04:13:32,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:32,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249549382] [2022-11-03 04:13:32,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:32,771 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:32,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:32,772 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:32,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 04:13:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:33,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:13:33,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:33,686 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 04:13:33,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:33,686 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:33,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249549382] [2022-11-03 04:13:33,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249549382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:33,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:33,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:13:33,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248578854] [2022-11-03 04:13:33,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:33,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:13:33,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:33,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:13:33,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:13:33,689 INFO L87 Difference]: Start difference. First operand 335 states and 459 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:34,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:34,297 INFO L93 Difference]: Finished difference Result 1110 states and 1553 transitions. [2022-11-03 04:13:34,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:13:34,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:34,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:34,301 INFO L225 Difference]: With dead ends: 1110 [2022-11-03 04:13:34,301 INFO L226 Difference]: Without dead ends: 851 [2022-11-03 04:13:34,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 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 04:13:34,302 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 2301 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 1885 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 04:13:34,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2301 Valid, 1885 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:13:34,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-03 04:13:34,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 337. [2022-11-03 04:13:34,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.3720238095238095) internal successors, (461), 336 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 04:13:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 461 transitions. [2022-11-03 04:13:34,322 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 461 transitions. Word has length 109 [2022-11-03 04:13:34,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:34,323 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 461 transitions. [2022-11-03 04:13:34,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:34,323 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 461 transitions. [2022-11-03 04:13:34,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:34,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:34,325 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] [2022-11-03 04:13:34,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-11-03 04:13:34,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:34,544 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:34,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:34,545 INFO L85 PathProgramCache]: Analyzing trace with hash 2139405871, now seen corresponding path program 1 times [2022-11-03 04:13:34,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:34,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51238697] [2022-11-03 04:13:34,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:34,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:34,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:34,547 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:34,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 04:13:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:35,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:13:35,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:35,788 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 04:13:35,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:35,788 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:35,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51238697] [2022-11-03 04:13:35,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51238697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:35,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:35,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:13:35,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275351071] [2022-11-03 04:13:35,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:35,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:13:35,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:35,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:13:35,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:13:35,797 INFO L87 Difference]: Start difference. First operand 337 states and 461 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:36,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:36,571 INFO L93 Difference]: Finished difference Result 1114 states and 1556 transitions. [2022-11-03 04:13:36,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:13:36,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:36,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:36,574 INFO L225 Difference]: With dead ends: 1114 [2022-11-03 04:13:36,574 INFO L226 Difference]: Without dead ends: 853 [2022-11-03 04:13:36,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 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 04:13:36,575 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 2291 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2291 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:13:36,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2291 Valid, 1815 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 04:13:36,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-11-03 04:13:36,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 339. [2022-11-03 04:13:36,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.3698224852071006) internal successors, (463), 338 states have internal predecessors, (463), 0 states have call successors, (0), 0 states 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 04:13:36,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 463 transitions. [2022-11-03 04:13:36,596 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 463 transitions. Word has length 109 [2022-11-03 04:13:36,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:36,596 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 463 transitions. [2022-11-03 04:13:36,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:36,597 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 463 transitions. [2022-11-03 04:13:36,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:36,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:36,598 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] [2022-11-03 04:13:36,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:36,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:36,813 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:36,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:36,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1279542419, now seen corresponding path program 1 times [2022-11-03 04:13:36,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:36,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273065827] [2022-11-03 04:13:36,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:36,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:36,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:36,816 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:36,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 04:13:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:37,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:13:37,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:37,719 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 04:13:37,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:37,720 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:37,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273065827] [2022-11-03 04:13:37,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273065827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:37,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:37,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:13:37,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640981898] [2022-11-03 04:13:37,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:37,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:13:37,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:37,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:13:37,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:13:37,724 INFO L87 Difference]: Start difference. First operand 339 states and 463 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:38,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:38,309 INFO L93 Difference]: Finished difference Result 1118 states and 1559 transitions. [2022-11-03 04:13:38,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:13:38,310 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:38,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:38,313 INFO L225 Difference]: With dead ends: 1118 [2022-11-03 04:13:38,314 INFO L226 Difference]: Without dead ends: 855 [2022-11-03 04:13:38,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 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 04:13:38,316 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 2287 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2287 SdHoareTripleChecker+Valid, 1891 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 04:13:38,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2287 Valid, 1891 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:13:38,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-11-03 04:13:38,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 341. [2022-11-03 04:13:38,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.3676470588235294) internal successors, (465), 340 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:13:38,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 465 transitions. [2022-11-03 04:13:38,343 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 465 transitions. Word has length 109 [2022-11-03 04:13:38,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:38,344 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 465 transitions. [2022-11-03 04:13:38,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:38,344 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 465 transitions. [2022-11-03 04:13:38,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:38,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:38,345 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] [2022-11-03 04:13:38,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:38,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:38,565 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:38,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:38,565 INFO L85 PathProgramCache]: Analyzing trace with hash 258797611, now seen corresponding path program 1 times [2022-11-03 04:13:38,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:38,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507720197] [2022-11-03 04:13:38,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:38,567 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:38,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:38,568 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:38,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 04:13:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:39,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:13:39,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:39,386 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 04:13:39,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:39,386 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:39,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507720197] [2022-11-03 04:13:39,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507720197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:39,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:39,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:13:39,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753598985] [2022-11-03 04:13:39,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:39,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:13:39,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:39,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:13:39,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:13:39,390 INFO L87 Difference]: Start difference. First operand 341 states and 465 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:40,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:40,001 INFO L93 Difference]: Finished difference Result 1122 states and 1562 transitions. [2022-11-03 04:13:40,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:13:40,003 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:40,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:40,006 INFO L225 Difference]: With dead ends: 1122 [2022-11-03 04:13:40,006 INFO L226 Difference]: Without dead ends: 857 [2022-11-03 04:13:40,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 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 04:13:40,007 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 2280 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2280 SdHoareTripleChecker+Valid, 1894 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 04:13:40,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2280 Valid, 1894 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:13:40,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-11-03 04:13:40,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 343. [2022-11-03 04:13:40,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.3654970760233918) internal successors, (467), 342 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:13:40,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 467 transitions. [2022-11-03 04:13:40,027 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 467 transitions. Word has length 109 [2022-11-03 04:13:40,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:40,028 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 467 transitions. [2022-11-03 04:13:40,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:40,028 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 467 transitions. [2022-11-03 04:13:40,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:40,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:40,030 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] [2022-11-03 04:13:40,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:40,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:40,249 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:40,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:40,249 INFO L85 PathProgramCache]: Analyzing trace with hash -222282647, now seen corresponding path program 1 times [2022-11-03 04:13:40,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:40,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162298066] [2022-11-03 04:13:40,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:40,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:40,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:40,253 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:40,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 04:13:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:40,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:13:40,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:41,392 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 04:13:41,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:41,393 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:41,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162298066] [2022-11-03 04:13:41,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162298066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:41,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:41,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:13:41,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617048616] [2022-11-03 04:13:41,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:41,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:13:41,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:41,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:13:41,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:13:41,396 INFO L87 Difference]: Start difference. First operand 343 states and 467 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:42,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:42,136 INFO L93 Difference]: Finished difference Result 1126 states and 1565 transitions. [2022-11-03 04:13:42,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:13:42,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:42,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:42,141 INFO L225 Difference]: With dead ends: 1126 [2022-11-03 04:13:42,141 INFO L226 Difference]: Without dead ends: 859 [2022-11-03 04:13:42,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 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 04:13:42,142 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 2270 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2270 SdHoareTripleChecker+Valid, 1824 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 04:13:42,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2270 Valid, 1824 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 04:13:42,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2022-11-03 04:13:42,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 345. [2022-11-03 04:13:42,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.3633720930232558) internal successors, (469), 344 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:13:42,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 469 transitions. [2022-11-03 04:13:42,160 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 469 transitions. Word has length 109 [2022-11-03 04:13:42,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:42,161 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 469 transitions. [2022-11-03 04:13:42,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:42,161 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 469 transitions. [2022-11-03 04:13:42,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:42,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:42,162 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] [2022-11-03 04:13:42,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:42,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:42,380 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:42,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:42,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1716879399, now seen corresponding path program 1 times [2022-11-03 04:13:42,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:42,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63590104] [2022-11-03 04:13:42,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:42,382 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:42,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:42,383 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:42,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 04:13:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:42,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:13:42,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:43,320 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 04:13:43,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:43,321 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:43,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63590104] [2022-11-03 04:13:43,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63590104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:43,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:43,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:13:43,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542123912] [2022-11-03 04:13:43,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:43,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:13:43,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:43,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:13:43,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:13:43,323 INFO L87 Difference]: Start difference. First operand 345 states and 469 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:43,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:43,743 INFO L93 Difference]: Finished difference Result 1029 states and 1436 transitions. [2022-11-03 04:13:43,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:13:43,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:43,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:43,748 INFO L225 Difference]: With dead ends: 1029 [2022-11-03 04:13:43,748 INFO L226 Difference]: Without dead ends: 760 [2022-11-03 04:13:43,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:13:43,749 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 1834 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:13:43,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1834 Valid, 1318 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:13:43,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-11-03 04:13:43,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 349. [2022-11-03 04:13:43,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.3620689655172413) internal successors, (474), 348 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:13:43,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 474 transitions. [2022-11-03 04:13:43,767 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 474 transitions. Word has length 109 [2022-11-03 04:13:43,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:43,767 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 474 transitions. [2022-11-03 04:13:43,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:43,768 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 474 transitions. [2022-11-03 04:13:43,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:43,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:43,769 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] [2022-11-03 04:13:43,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:43,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:43,985 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:43,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:43,985 INFO L85 PathProgramCache]: Analyzing trace with hash -332508443, now seen corresponding path program 1 times [2022-11-03 04:13:43,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:43,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448869031] [2022-11-03 04:13:43,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:43,986 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:43,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:43,988 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:43,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 04:13:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:44,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:13:44,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:44,877 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 04:13:44,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:44,877 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:44,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448869031] [2022-11-03 04:13:44,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448869031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:44,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:44,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:13:44,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804030956] [2022-11-03 04:13:44,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:44,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:13:44,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:44,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:13:44,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:13:44,879 INFO L87 Difference]: Start difference. First operand 349 states and 474 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:45,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:45,462 INFO L93 Difference]: Finished difference Result 1166 states and 1613 transitions. [2022-11-03 04:13:45,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:13:45,463 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:45,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:45,466 INFO L225 Difference]: With dead ends: 1166 [2022-11-03 04:13:45,466 INFO L226 Difference]: Without dead ends: 893 [2022-11-03 04:13:45,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 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 04:13:45,468 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 2314 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 1905 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 04:13:45,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2314 Valid, 1905 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:13:45,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2022-11-03 04:13:45,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 351. [2022-11-03 04:13:45,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.36) internal successors, (476), 350 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:13:45,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 476 transitions. [2022-11-03 04:13:45,489 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 476 transitions. Word has length 109 [2022-11-03 04:13:45,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:45,490 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 476 transitions. [2022-11-03 04:13:45,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:45,490 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 476 transitions. [2022-11-03 04:13:45,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:45,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:45,491 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] [2022-11-03 04:13:45,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-03 04:13:45,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:45,710 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:45,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:45,711 INFO L85 PathProgramCache]: Analyzing trace with hash -84361949, now seen corresponding path program 1 times [2022-11-03 04:13:45,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:45,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779290842] [2022-11-03 04:13:45,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:45,712 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:45,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:45,713 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:45,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-03 04:13:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:46,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:13:46,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:46,940 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 04:13:46,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:46,940 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:46,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779290842] [2022-11-03 04:13:46,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779290842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:46,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:46,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:13:46,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081944148] [2022-11-03 04:13:46,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:46,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:13:46,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:46,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:13:46,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:13:46,943 INFO L87 Difference]: Start difference. First operand 351 states and 476 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:47,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:47,736 INFO L93 Difference]: Finished difference Result 1170 states and 1616 transitions. [2022-11-03 04:13:47,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:13:47,737 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:47,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:47,739 INFO L225 Difference]: With dead ends: 1170 [2022-11-03 04:13:47,739 INFO L226 Difference]: Without dead ends: 895 [2022-11-03 04:13:47,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 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 04:13:47,740 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 2304 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2304 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:13:47,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2304 Valid, 1835 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 04:13:47,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-11-03 04:13:47,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 353. [2022-11-03 04:13:47,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.3579545454545454) internal successors, (478), 352 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:13:47,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 478 transitions. [2022-11-03 04:13:47,757 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 478 transitions. Word has length 109 [2022-11-03 04:13:47,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:47,757 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 478 transitions. [2022-11-03 04:13:47,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:47,757 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 478 transitions. [2022-11-03 04:13:47,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:47,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:47,758 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] [2022-11-03 04:13:47,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:47,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:47,965 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:47,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:47,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1456169247, now seen corresponding path program 1 times [2022-11-03 04:13:47,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:47,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189023230] [2022-11-03 04:13:47,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:47,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:47,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:47,968 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:47,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 04:13:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:48,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:13:48,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:48,885 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 04:13:48,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:48,886 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:48,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189023230] [2022-11-03 04:13:48,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189023230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:48,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:48,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:13:48,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204274728] [2022-11-03 04:13:48,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:48,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:13:48,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:48,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:13:48,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:13:48,888 INFO L87 Difference]: Start difference. First operand 353 states and 478 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:49,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:49,286 INFO L93 Difference]: Finished difference Result 1043 states and 1448 transitions. [2022-11-03 04:13:49,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:13:49,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:49,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:49,292 INFO L225 Difference]: With dead ends: 1043 [2022-11-03 04:13:49,293 INFO L226 Difference]: Without dead ends: 766 [2022-11-03 04:13:49,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 104 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 04:13:49,294 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1816 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1816 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:13:49,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1816 Valid, 1326 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:13:49,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-11-03 04:13:49,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 355. [2022-11-03 04:13:49,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.3559322033898304) internal successors, (480), 354 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:13:49,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 480 transitions. [2022-11-03 04:13:49,315 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 480 transitions. Word has length 109 [2022-11-03 04:13:49,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:49,315 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 480 transitions. [2022-11-03 04:13:49,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:49,316 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 480 transitions. [2022-11-03 04:13:49,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:49,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:49,317 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] [2022-11-03 04:13:49,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:49,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:49,533 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:49,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:49,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1809438751, now seen corresponding path program 1 times [2022-11-03 04:13:49,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:49,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65237809] [2022-11-03 04:13:49,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:49,535 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:49,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:49,537 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:49,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-03 04:13:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:50,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:13:50,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:50,486 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 04:13:50,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:50,487 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:50,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65237809] [2022-11-03 04:13:50,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65237809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:50,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:50,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:13:50,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233254210] [2022-11-03 04:13:50,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:50,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:13:50,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:50,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:13:50,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:13:50,489 INFO L87 Difference]: Start difference. First operand 355 states and 480 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:50,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:50,893 INFO L93 Difference]: Finished difference Result 1047 states and 1451 transitions. [2022-11-03 04:13:50,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:13:50,894 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:50,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:50,897 INFO L225 Difference]: With dead ends: 1047 [2022-11-03 04:13:50,897 INFO L226 Difference]: Without dead ends: 768 [2022-11-03 04:13:50,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:13:50,898 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 1810 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:13:50,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1810 Valid, 1328 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:13:50,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-11-03 04:13:50,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 357. [2022-11-03 04:13:50,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.353932584269663) internal successors, (482), 356 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:13:50,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 482 transitions. [2022-11-03 04:13:50,919 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 482 transitions. Word has length 109 [2022-11-03 04:13:50,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:50,920 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 482 transitions. [2022-11-03 04:13:50,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:50,920 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 482 transitions. [2022-11-03 04:13:50,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:50,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:50,922 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] [2022-11-03 04:13:50,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:51,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:51,137 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:51,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:51,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1415071965, now seen corresponding path program 1 times [2022-11-03 04:13:51,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:51,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133617188] [2022-11-03 04:13:51,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:51,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:51,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:51,140 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:51,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-03 04:13:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:51,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:13:51,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:52,362 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 04:13:52,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:52,362 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:52,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133617188] [2022-11-03 04:13:52,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133617188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:52,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:52,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:13:52,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051665224] [2022-11-03 04:13:52,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:52,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:13:52,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:52,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:13:52,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:13:52,365 INFO L87 Difference]: Start difference. First operand 357 states and 482 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:53,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:53,149 INFO L93 Difference]: Finished difference Result 1194 states and 1640 transitions. [2022-11-03 04:13:53,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:13:53,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:53,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:53,152 INFO L225 Difference]: With dead ends: 1194 [2022-11-03 04:13:53,152 INFO L226 Difference]: Without dead ends: 913 [2022-11-03 04:13:53,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 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 04:13:53,153 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 2307 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2307 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:13:53,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2307 Valid, 1842 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 04:13:53,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2022-11-03 04:13:53,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 359. [2022-11-03 04:13:53,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.3519553072625698) internal successors, (484), 358 states have internal predecessors, (484), 0 states have call successors, (0), 0 states 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 04:13:53,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 484 transitions. [2022-11-03 04:13:53,171 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 484 transitions. Word has length 109 [2022-11-03 04:13:53,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:53,171 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 484 transitions. [2022-11-03 04:13:53,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:53,172 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 484 transitions. [2022-11-03 04:13:53,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:53,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:53,173 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] [2022-11-03 04:13:53,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-03 04:13:53,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:53,388 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:53,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:53,389 INFO L85 PathProgramCache]: Analyzing trace with hash -828911333, now seen corresponding path program 1 times [2022-11-03 04:13:53,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:53,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251240704] [2022-11-03 04:13:53,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:53,391 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:53,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:53,392 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:53,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-03 04:13:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:53,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 04:13:53,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:55,370 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 04:13:55,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:55,371 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:55,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251240704] [2022-11-03 04:13:55,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251240704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:55,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:55,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:13:55,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522906603] [2022-11-03 04:13:55,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:55,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:13:55,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:55,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:13:55,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:13:55,373 INFO L87 Difference]: Start difference. First operand 359 states and 484 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:56,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:56,207 INFO L93 Difference]: Finished difference Result 1186 states and 1628 transitions. [2022-11-03 04:13:56,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:13:56,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:13:56,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:56,210 INFO L225 Difference]: With dead ends: 1186 [2022-11-03 04:13:56,210 INFO L226 Difference]: Without dead ends: 903 [2022-11-03 04:13:56,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:13:56,211 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 2276 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2276 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:13:56,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2276 Valid, 1872 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 04:13:56,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-11-03 04:13:56,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 361. [2022-11-03 04:13:56,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.35) internal successors, (486), 360 states have internal predecessors, (486), 0 states have call successors, (0), 0 states 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 04:13:56,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 486 transitions. [2022-11-03 04:13:56,232 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 486 transitions. Word has length 109 [2022-11-03 04:13:56,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:56,233 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 486 transitions. [2022-11-03 04:13:56,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:13:56,233 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 486 transitions. [2022-11-03 04:13:56,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:13:56,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:56,235 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] [2022-11-03 04:13:56,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-11-03 04:13:56,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:13:56,435 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:56,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:56,436 INFO L85 PathProgramCache]: Analyzing trace with hash -554151719, now seen corresponding path program 1 times [2022-11-03 04:13:56,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:56,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785200013] [2022-11-03 04:13:56,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:56,437 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:56,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:56,438 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:56,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 04:13:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:56,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-03 04:13:56,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:59,644 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 04:13:59,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:13:59,644 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:59,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785200013] [2022-11-03 04:13:59,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785200013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:59,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:59,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:13:59,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546674282] [2022-11-03 04:13:59,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:59,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:13:59,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:59,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:13:59,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:13:59,647 INFO L87 Difference]: Start difference. First operand 361 states and 486 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:14:00,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:00,693 INFO L93 Difference]: Finished difference Result 1162 states and 1595 transitions. [2022-11-03 04:14:00,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:14:00,694 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:14:00,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:00,698 INFO L225 Difference]: With dead ends: 1162 [2022-11-03 04:14:00,698 INFO L226 Difference]: Without dead ends: 877 [2022-11-03 04:14:00,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:14:00,700 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 2212 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2212 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:00,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2212 Valid, 1875 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 04:14:00,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2022-11-03 04:14:00,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 363. [2022-11-03 04:14:00,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.3480662983425415) internal successors, (488), 362 states have internal predecessors, (488), 0 states have call successors, (0), 0 states 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 04:14:00,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 488 transitions. [2022-11-03 04:14:00,713 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 488 transitions. Word has length 109 [2022-11-03 04:14:00,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:00,713 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 488 transitions. [2022-11-03 04:14:00,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:14:00,713 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 488 transitions. [2022-11-03 04:14:00,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:14:00,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:00,714 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] [2022-11-03 04:14:00,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-03 04:14:00,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:14:00,917 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:00,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:00,917 INFO L85 PathProgramCache]: Analyzing trace with hash -531519465, now seen corresponding path program 1 times [2022-11-03 04:14:00,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:14:00,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965301706] [2022-11-03 04:14:00,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:00,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:14:00,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:14:00,920 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:14:00,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-03 04:14:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:01,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 04:14:01,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:14:02,047 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 04:14:02,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:14:02,047 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:14:02,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965301706] [2022-11-03 04:14:02,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965301706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:14:02,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:14:02,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:14:02,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371526914] [2022-11-03 04:14:02,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:14:02,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:14:02,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:14:02,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:14:02,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:14:02,049 INFO L87 Difference]: Start difference. First operand 363 states and 488 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:14:02,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:02,348 INFO L93 Difference]: Finished difference Result 968 states and 1310 transitions. [2022-11-03 04:14:02,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:14:02,349 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:14:02,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:02,351 INFO L225 Difference]: With dead ends: 968 [2022-11-03 04:14:02,351 INFO L226 Difference]: Without dead ends: 681 [2022-11-03 04:14:02,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:14:02,352 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 525 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:02,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 1873 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 16 Unchecked, 0.2s Time] [2022-11-03 04:14:02,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-11-03 04:14:02,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 395. [2022-11-03 04:14:02,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.3223350253807107) internal successors, (521), 394 states have internal predecessors, (521), 0 states have call successors, (0), 0 states 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 04:14:02,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 521 transitions. [2022-11-03 04:14:02,374 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 521 transitions. Word has length 109 [2022-11-03 04:14:02,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:02,375 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 521 transitions. [2022-11-03 04:14:02,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:14:02,375 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 521 transitions. [2022-11-03 04:14:02,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:14:02,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:02,377 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] [2022-11-03 04:14:02,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-11-03 04:14:02,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:14:02,593 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:02,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:02,593 INFO L85 PathProgramCache]: Analyzing trace with hash -22046375, now seen corresponding path program 1 times [2022-11-03 04:14:02,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:14:02,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677062559] [2022-11-03 04:14:02,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:02,595 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:14:02,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:14:02,596 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:14:02,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 04:14:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:03,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:14:03,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:14:03,591 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 04:14:03,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:14:03,591 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:14:03,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677062559] [2022-11-03 04:14:03,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677062559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:14:03,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:14:03,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:14:03,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006113072] [2022-11-03 04:14:03,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:14:03,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:14:03,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:14:03,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:14:03,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:14:03,593 INFO L87 Difference]: Start difference. First operand 395 states and 521 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:14:04,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:04,110 INFO L93 Difference]: Finished difference Result 1316 states and 1794 transitions. [2022-11-03 04:14:04,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:14:04,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:14:04,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:04,114 INFO L225 Difference]: With dead ends: 1316 [2022-11-03 04:14:04,114 INFO L226 Difference]: Without dead ends: 1029 [2022-11-03 04:14:04,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 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 04:14:04,116 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 1892 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:04,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1892 Valid, 1613 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 04:14:04,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2022-11-03 04:14:04,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 397. [2022-11-03 04:14:04,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 1.3207070707070707) internal successors, (523), 396 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:14:04,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 523 transitions. [2022-11-03 04:14:04,135 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 523 transitions. Word has length 109 [2022-11-03 04:14:04,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:04,135 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 523 transitions. [2022-11-03 04:14:04,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:14:04,135 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 523 transitions. [2022-11-03 04:14:04,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:14:04,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:04,136 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] [2022-11-03 04:14:04,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-11-03 04:14:04,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:14:04,337 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:04,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:04,338 INFO L85 PathProgramCache]: Analyzing trace with hash -156059881, now seen corresponding path program 1 times [2022-11-03 04:14:04,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:14:04,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016271752] [2022-11-03 04:14:04,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:04,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:14:04,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:14:04,340 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:14:04,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-03 04:14:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:04,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-03 04:14:04,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:14:05,885 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 04:14:05,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:14:05,885 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:14:05,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016271752] [2022-11-03 04:14:05,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016271752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:14:05,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:14:05,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:14:05,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059578043] [2022-11-03 04:14:05,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:14:05,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:14:05,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:14:05,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:14:05,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:14:05,899 INFO L87 Difference]: Start difference. First operand 397 states and 523 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:14:06,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:06,430 INFO L93 Difference]: Finished difference Result 1320 states and 1797 transitions. [2022-11-03 04:14:06,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:14:06,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:14:06,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:06,433 INFO L225 Difference]: With dead ends: 1320 [2022-11-03 04:14:06,434 INFO L226 Difference]: Without dead ends: 1031 [2022-11-03 04:14:06,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 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 04:14:06,435 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1886 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:06,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1886 Valid, 1576 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 04:14:06,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-11-03 04:14:06,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 399. [2022-11-03 04:14:06,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.3190954773869348) internal successors, (525), 398 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 04:14:06,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 525 transitions. [2022-11-03 04:14:06,454 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 525 transitions. Word has length 109 [2022-11-03 04:14:06,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:06,455 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 525 transitions. [2022-11-03 04:14:06,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:14:06,455 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 525 transitions. [2022-11-03 04:14:06,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:14:06,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:06,456 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] [2022-11-03 04:14:06,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-03 04:14:06,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:14:06,671 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:06,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:06,671 INFO L85 PathProgramCache]: Analyzing trace with hash 62794837, now seen corresponding path program 1 times [2022-11-03 04:14:06,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:14:06,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083234687] [2022-11-03 04:14:06,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:06,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:14:06,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:14:06,674 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:14:06,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-03 04:14:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:07,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:14:07,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:14:07,371 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 04:14:07,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:14:07,371 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:14:07,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083234687] [2022-11-03 04:14:07,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083234687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:14:07,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:14:07,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:14:07,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5815609] [2022-11-03 04:14:07,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:14:07,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:14:07,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:14:07,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:14:07,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:14:07,373 INFO L87 Difference]: Start difference. First operand 399 states and 525 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:14:07,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:07,464 INFO L93 Difference]: Finished difference Result 1167 states and 1597 transitions. [2022-11-03 04:14:07,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:14:07,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:14:07,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:07,468 INFO L225 Difference]: With dead ends: 1167 [2022-11-03 04:14:07,468 INFO L226 Difference]: Without dead ends: 876 [2022-11-03 04:14:07,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 106 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 04:14:07,469 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 684 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:07,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 1190 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:14:07,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-03 04:14:07,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 471. [2022-11-03 04:14:07,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.3404255319148937) internal successors, (630), 470 states have internal predecessors, (630), 0 states have call successors, (0), 0 states 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 04:14:07,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 630 transitions. [2022-11-03 04:14:07,493 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 630 transitions. Word has length 109 [2022-11-03 04:14:07,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:07,494 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 630 transitions. [2022-11-03 04:14:07,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:14:07,494 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 630 transitions. [2022-11-03 04:14:07,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:14:07,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:07,496 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] [2022-11-03 04:14:07,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-11-03 04:14:07,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:14:07,715 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:07,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:07,716 INFO L85 PathProgramCache]: Analyzing trace with hash -754853613, now seen corresponding path program 1 times [2022-11-03 04:14:07,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:14:07,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719350823] [2022-11-03 04:14:07,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:07,717 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:14:07,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:14:07,718 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:14:07,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-03 04:14:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:08,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:14:08,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:14:08,405 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 04:14:08,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:14:08,405 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:14:08,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1719350823] [2022-11-03 04:14:08,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1719350823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:14:08,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:14:08,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:14:08,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524059441] [2022-11-03 04:14:08,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:14:08,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:14:08,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:14:08,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:14:08,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:14:08,407 INFO L87 Difference]: Start difference. First operand 471 states and 630 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:14:08,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:08,503 INFO L93 Difference]: Finished difference Result 1167 states and 1596 transitions. [2022-11-03 04:14:08,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:14:08,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:14:08,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:08,508 INFO L225 Difference]: With dead ends: 1167 [2022-11-03 04:14:08,508 INFO L226 Difference]: Without dead ends: 876 [2022-11-03 04:14:08,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 106 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 04:14:08,510 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 678 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:08,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1189 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:14:08,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-03 04:14:08,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 473. [2022-11-03 04:14:08,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.3389830508474576) internal successors, (632), 472 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 04:14:08,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 632 transitions. [2022-11-03 04:14:08,534 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 632 transitions. Word has length 109 [2022-11-03 04:14:08,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:08,535 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 632 transitions. [2022-11-03 04:14:08,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:14:08,535 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 632 transitions. [2022-11-03 04:14:08,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:14:08,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:08,536 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] [2022-11-03 04:14:08,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-11-03 04:14:08,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:14:08,753 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:08,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:08,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1545968977, now seen corresponding path program 1 times [2022-11-03 04:14:08,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:14:08,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556044869] [2022-11-03 04:14:08,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:08,754 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:14:08,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:14:08,755 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:14:08,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-03 04:14:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:09,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:14:09,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:14:09,458 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 04:14:09,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:14:09,459 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:14:09,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556044869] [2022-11-03 04:14:09,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556044869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:14:09,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:14:09,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:14:09,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851797971] [2022-11-03 04:14:09,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:14:09,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:14:09,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:14:09,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:14:09,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:14:09,461 INFO L87 Difference]: Start difference. First operand 473 states and 632 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:14:09,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:09,548 INFO L93 Difference]: Finished difference Result 1167 states and 1595 transitions. [2022-11-03 04:14:09,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:14:09,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:14:09,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:09,551 INFO L225 Difference]: With dead ends: 1167 [2022-11-03 04:14:09,551 INFO L226 Difference]: Without dead ends: 876 [2022-11-03 04:14:09,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 106 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 04:14:09,552 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 657 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:09,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1188 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:14:09,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-03 04:14:09,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 481. [2022-11-03 04:14:09,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.3395833333333333) internal successors, (643), 480 states have internal predecessors, (643), 0 states have call successors, (0), 0 states 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 04:14:09,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 643 transitions. [2022-11-03 04:14:09,572 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 643 transitions. Word has length 109 [2022-11-03 04:14:09,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:09,573 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 643 transitions. [2022-11-03 04:14:09,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:14:09,573 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 643 transitions. [2022-11-03 04:14:09,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:14:09,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:09,575 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] [2022-11-03 04:14:09,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-03 04:14:09,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:14:09,794 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:09,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:09,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1152941967, now seen corresponding path program 1 times [2022-11-03 04:14:09,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:14:09,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775884644] [2022-11-03 04:14:09,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:09,796 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:14:09,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:14:09,802 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:14:09,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-03 04:14:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:10,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:14:10,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:14:10,606 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 04:14:10,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:14:10,606 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:14:10,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775884644] [2022-11-03 04:14:10,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775884644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:14:10,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:14:10,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:14:10,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563529910] [2022-11-03 04:14:10,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:14:10,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:14:10,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:14:10,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:14:10,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:14:10,609 INFO L87 Difference]: Start difference. First operand 481 states and 643 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:14:11,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:11,012 INFO L93 Difference]: Finished difference Result 1348 states and 1829 transitions. [2022-11-03 04:14:11,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:14:11,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:14:11,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:11,015 INFO L225 Difference]: With dead ends: 1348 [2022-11-03 04:14:11,015 INFO L226 Difference]: Without dead ends: 1057 [2022-11-03 04:14:11,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 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 04:14:11,016 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 922 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:11,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 2606 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 30 Unchecked, 0.4s Time] [2022-11-03 04:14:11,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2022-11-03 04:14:11,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 489. [2022-11-03 04:14:11,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 1.3381147540983607) internal successors, (653), 488 states have internal predecessors, (653), 0 states have call successors, (0), 0 states 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 04:14:11,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 653 transitions. [2022-11-03 04:14:11,031 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 653 transitions. Word has length 109 [2022-11-03 04:14:11,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:11,031 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 653 transitions. [2022-11-03 04:14:11,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:14:11,032 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 653 transitions. [2022-11-03 04:14:11,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:14:11,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:11,033 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] [2022-11-03 04:14:11,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-11-03 04:14:11,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:14:11,251 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:11,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:11,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1210200269, now seen corresponding path program 1 times [2022-11-03 04:14:11,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:14:11,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795794590] [2022-11-03 04:14:11,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:11,253 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:14:11,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:14:11,254 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:14:11,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-03 04:14:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:11,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 04:14:11,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:14:12,230 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 04:14:12,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:14:12,231 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:14:12,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795794590] [2022-11-03 04:14:12,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795794590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:14:12,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:14:12,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:14:12,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370422570] [2022-11-03 04:14:12,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:14:12,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:14:12,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:14:12,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:14:12,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:14:12,234 INFO L87 Difference]: Start difference. First operand 489 states and 653 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:14:12,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:12,672 INFO L93 Difference]: Finished difference Result 787 states and 1062 transitions. [2022-11-03 04:14:12,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:14:12,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 04:14:12,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:12,675 INFO L225 Difference]: With dead ends: 787 [2022-11-03 04:14:12,675 INFO L226 Difference]: Without dead ends: 785 [2022-11-03 04:14:12,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 105 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 04:14:12,676 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 787 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:12,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1305 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 04:14:12,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2022-11-03 04:14:12,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 497. [2022-11-03 04:14:12,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.3387096774193548) internal successors, (664), 496 states have internal predecessors, (664), 0 states have call successors, (0), 0 states 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 04:14:12,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 664 transitions. [2022-11-03 04:14:12,700 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 664 transitions. Word has length 109 [2022-11-03 04:14:12,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:12,701 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 664 transitions. [2022-11-03 04:14:12,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:14:12,701 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 664 transitions. [2022-11-03 04:14:12,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:14:12,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:12,705 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:12,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-03 04:14:12,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:14:12,924 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:12,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:12,925 INFO L85 PathProgramCache]: Analyzing trace with hash -303024265, now seen corresponding path program 1 times [2022-11-03 04:14:12,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:14:12,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101335946] [2022-11-03 04:14:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:12,927 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:14:12,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:14:12,929 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:14:12,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-03 04:14:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:13,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:14:13,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:14:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:14:14,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:14:14,027 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:14:14,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101335946] [2022-11-03 04:14:14,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101335946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:14:14,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:14:14,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:14:14,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174431409] [2022-11-03 04:14:14,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:14:14,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:14:14,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:14:14,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:14:14,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:14:14,029 INFO L87 Difference]: Start difference. First operand 497 states and 664 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:14:14,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:14,127 INFO L93 Difference]: Finished difference Result 1173 states and 1602 transitions. [2022-11-03 04:14:14,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:14:14,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:14:14,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:14,131 INFO L225 Difference]: With dead ends: 1173 [2022-11-03 04:14:14,131 INFO L226 Difference]: Without dead ends: 882 [2022-11-03 04:14:14,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 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 04:14:14,133 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 628 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:14,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 1185 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:14:14,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2022-11-03 04:14:14,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 499. [2022-11-03 04:14:14,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.3373493975903614) internal successors, (666), 498 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 04:14:14,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 666 transitions. [2022-11-03 04:14:14,157 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 666 transitions. Word has length 310 [2022-11-03 04:14:14,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:14,158 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 666 transitions. [2022-11-03 04:14:14,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:14:14,158 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 666 transitions. [2022-11-03 04:14:14,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:14:14,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:14,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:14,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-11-03 04:14:14,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:14:14,385 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:14,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:14,385 INFO L85 PathProgramCache]: Analyzing trace with hash 2024138105, now seen corresponding path program 1 times [2022-11-03 04:14:14,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:14:14,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527225753] [2022-11-03 04:14:14,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:14,388 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:14:14,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:14:14,389 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:14:14,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-03 04:14:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:15,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:14:15,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:14:15,571 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:14:15,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:14:15,572 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:14:15,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527225753] [2022-11-03 04:14:15,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527225753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:14:15,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:14:15,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:14:15,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79613440] [2022-11-03 04:14:15,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:14:15,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:14:15,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:14:15,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:14:15,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:14:15,574 INFO L87 Difference]: Start difference. First operand 499 states and 666 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:14:15,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:15,951 INFO L93 Difference]: Finished difference Result 1356 states and 1838 transitions. [2022-11-03 04:14:15,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:14:15,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:14:15,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:15,953 INFO L225 Difference]: With dead ends: 1356 [2022-11-03 04:14:15,953 INFO L226 Difference]: Without dead ends: 1065 [2022-11-03 04:14:15,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 304 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 04:14:15,955 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 1173 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1908 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:15,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 1908 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 28 Unchecked, 0.3s Time] [2022-11-03 04:14:15,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2022-11-03 04:14:15,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 509. [2022-11-03 04:14:15,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 508 states have (on average 1.3346456692913387) internal successors, (678), 508 states have internal predecessors, (678), 0 states have call successors, (0), 0 states 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 04:14:15,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 678 transitions. [2022-11-03 04:14:15,987 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 678 transitions. Word has length 310 [2022-11-03 04:14:15,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:15,987 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 678 transitions. [2022-11-03 04:14:15,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:14:15,988 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 678 transitions. [2022-11-03 04:14:15,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:14:15,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:15,991 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:16,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-03 04:14:16,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:14:16,205 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:16,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:16,205 INFO L85 PathProgramCache]: Analyzing trace with hash 299295867, now seen corresponding path program 1 times [2022-11-03 04:14:16,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:14:16,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333240157] [2022-11-03 04:14:16,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:16,208 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:14:16,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:14:16,209 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:14:16,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-03 04:14:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:17,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:14:17,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:14:17,320 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:14:17,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:14:17,320 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:14:17,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333240157] [2022-11-03 04:14:17,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333240157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:14:17,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:14:17,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:14:17,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416998017] [2022-11-03 04:14:17,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:14:17,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:14:17,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:14:17,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:14:17,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:14:17,323 INFO L87 Difference]: Start difference. First operand 509 states and 678 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:14:17,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:17,425 INFO L93 Difference]: Finished difference Result 1183 states and 1613 transitions. [2022-11-03 04:14:17,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:14:17,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:14:17,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:17,427 INFO L225 Difference]: With dead ends: 1183 [2022-11-03 04:14:17,427 INFO L226 Difference]: Without dead ends: 892 [2022-11-03 04:14:17,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 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 04:14:17,428 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 612 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:17,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 1184 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:14:17,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2022-11-03 04:14:17,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 515. [2022-11-03 04:14:17,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 1.3346303501945525) internal successors, (686), 514 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 04:14:17,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 686 transitions. [2022-11-03 04:14:17,443 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 686 transitions. Word has length 310 [2022-11-03 04:14:17,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:17,443 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 686 transitions. [2022-11-03 04:14:17,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:14:17,443 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 686 transitions. [2022-11-03 04:14:17,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:14:17,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:17,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:17,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-11-03 04:14:17,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:14:17,646 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:17,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:17,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1981826051, now seen corresponding path program 1 times [2022-11-03 04:14:17,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:14:17,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588308925] [2022-11-03 04:14:17,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:17,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:14:17,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:14:17,651 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:14:17,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-03 04:14:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:18,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:14:18,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:14:19,009 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:14:19,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:14:19,009 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:14:19,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588308925] [2022-11-03 04:14:19,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588308925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:14:19,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:14:19,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:14:19,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766654173] [2022-11-03 04:14:19,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:14:19,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:14:19,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:14:19,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:14:19,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:14:19,013 INFO L87 Difference]: Start difference. First operand 515 states and 686 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:14:19,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:19,308 INFO L93 Difference]: Finished difference Result 848 states and 1139 transitions. [2022-11-03 04:14:19,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:14:19,308 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:14:19,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:19,310 INFO L225 Difference]: With dead ends: 848 [2022-11-03 04:14:19,310 INFO L226 Difference]: Without dead ends: 557 [2022-11-03 04:14:19,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:14:19,311 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 79 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:19,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1427 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 44 Unchecked, 0.3s Time] [2022-11-03 04:14:19,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-11-03 04:14:19,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2022-11-03 04:14:19,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 556 states have (on average 1.329136690647482) internal successors, (739), 556 states have internal predecessors, (739), 0 states have call successors, (0), 0 states 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 04:14:19,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 739 transitions. [2022-11-03 04:14:19,331 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 739 transitions. Word has length 310 [2022-11-03 04:14:19,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:19,333 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 739 transitions. [2022-11-03 04:14:19,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:14:19,334 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 739 transitions. [2022-11-03 04:14:19,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:14:19,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:19,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:19,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-03 04:14:19,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:14:19,562 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:19,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:19,563 INFO L85 PathProgramCache]: Analyzing trace with hash 98757627, now seen corresponding path program 1 times [2022-11-03 04:14:19,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:14:19,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002397537] [2022-11-03 04:14:19,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:19,565 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:14:19,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:14:19,566 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:14:19,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-03 04:14:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:20,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:14:20,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:14:20,869 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:14:20,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:14:20,870 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:14:20,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002397537] [2022-11-03 04:14:20,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002397537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:14:20,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:14:20,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:14:20,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980252673] [2022-11-03 04:14:20,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:14:20,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:14:20,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:14:20,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:14:20,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:14:20,873 INFO L87 Difference]: Start difference. First operand 557 states and 739 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:14:21,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:21,349 INFO L93 Difference]: Finished difference Result 1408 states and 1901 transitions. [2022-11-03 04:14:21,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:14:21,350 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:14:21,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:21,352 INFO L225 Difference]: With dead ends: 1408 [2022-11-03 04:14:21,352 INFO L226 Difference]: Without dead ends: 1117 [2022-11-03 04:14:21,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 304 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 04:14:21,354 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 889 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 2656 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:21,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 2656 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 30 Unchecked, 0.4s Time] [2022-11-03 04:14:21,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2022-11-03 04:14:21,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 567. [2022-11-03 04:14:21,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 1.325088339222615) internal successors, (750), 566 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 04:14:21,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 750 transitions. [2022-11-03 04:14:21,379 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 750 transitions. Word has length 310 [2022-11-03 04:14:21,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:21,380 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 750 transitions. [2022-11-03 04:14:21,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:14:21,380 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 750 transitions. [2022-11-03 04:14:21,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:14:21,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:21,383 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:21,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-03 04:14:21,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:14:21,597 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:21,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:21,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1686645635, now seen corresponding path program 1 times [2022-11-03 04:14:21,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:14:21,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82697222] [2022-11-03 04:14:21,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:21,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:14:21,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:14:21,601 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:14:21,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-03 04:14:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:22,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-03 04:14:22,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:14:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:14:25,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:14:25,005 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:14:25,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82697222] [2022-11-03 04:14:25,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82697222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:14:25,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:14:25,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:14:25,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518210375] [2022-11-03 04:14:25,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:14:25,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:14:25,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:14:25,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:14:25,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:14:25,007 INFO L87 Difference]: Start difference. First operand 567 states and 750 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:14:26,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:26,040 INFO L93 Difference]: Finished difference Result 1600 states and 2154 transitions. [2022-11-03 04:14:26,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:14:26,041 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:14:26,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:26,042 INFO L225 Difference]: With dead ends: 1600 [2022-11-03 04:14:26,043 INFO L226 Difference]: Without dead ends: 1309 [2022-11-03 04:14:26,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:14:26,044 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 2336 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2336 SdHoareTripleChecker+Valid, 1921 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:26,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2336 Valid, 1921 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 04:14:26,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2022-11-03 04:14:26,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 721. [2022-11-03 04:14:26,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 1.3208333333333333) internal successors, (951), 720 states have internal predecessors, (951), 0 states have call successors, (0), 0 states 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 04:14:26,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 951 transitions. [2022-11-03 04:14:26,066 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 951 transitions. Word has length 310 [2022-11-03 04:14:26,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:26,066 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 951 transitions. [2022-11-03 04:14:26,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:14:26,066 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 951 transitions. [2022-11-03 04:14:26,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:14:26,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:26,069 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:26,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2022-11-03 04:14:26,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:14:26,293 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:26,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:26,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1563363969, now seen corresponding path program 1 times [2022-11-03 04:14:26,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:14:26,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247007676] [2022-11-03 04:14:26,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:26,295 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:14:26,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:14:26,296 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:14:26,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-03 04:14:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:27,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 232 conjunts are in the unsatisfiable core [2022-11-03 04:14:27,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:14:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:14:48,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:14:48,037 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:14:48,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247007676] [2022-11-03 04:14:48,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247007676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:14:48,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:14:48,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 04:14:48,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023990388] [2022-11-03 04:14:48,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:14:48,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 04:14:48,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:14:48,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 04:14:48,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:14:48,039 INFO L87 Difference]: Start difference. First operand 721 states and 951 transitions. Second operand has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:14:51,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:51,033 INFO L93 Difference]: Finished difference Result 2358 states and 3158 transitions. [2022-11-03 04:14:51,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 04:14:51,036 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:14:51,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:51,042 INFO L225 Difference]: With dead ends: 2358 [2022-11-03 04:14:51,042 INFO L226 Difference]: Without dead ends: 2021 [2022-11-03 04:14:51,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-11-03 04:14:51,044 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 2902 mSDsluCounter, 5050 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2902 SdHoareTripleChecker+Valid, 5458 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 201 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:51,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2902 Valid, 5458 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 258 Invalid, 0 Unknown, 201 Unchecked, 0.9s Time] [2022-11-03 04:14:51,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2022-11-03 04:14:51,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 897. [2022-11-03 04:14:51,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 896 states have (on average 1.2946428571428572) internal successors, (1160), 896 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 04:14:51,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1160 transitions. [2022-11-03 04:14:51,089 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1160 transitions. Word has length 310 [2022-11-03 04:14:51,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:51,089 INFO L495 AbstractCegarLoop]: Abstraction has 897 states and 1160 transitions. [2022-11-03 04:14:51,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:14:51,090 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1160 transitions. [2022-11-03 04:14:51,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:14:51,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:51,094 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:51,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-03 04:14:51,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:14:51,318 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:51,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:51,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1571362943, now seen corresponding path program 1 times [2022-11-03 04:14:51,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:14:51,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056952235] [2022-11-03 04:14:51,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:51,320 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:14:51,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:14:51,321 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:14:51,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-03 04:14:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:52,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 246 conjunts are in the unsatisfiable core [2022-11-03 04:14:52,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:15:14,908 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:15:14,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:15:14,909 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:15:14,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056952235] [2022-11-03 04:15:14,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056952235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:15:14,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:15:14,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 04:15:14,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763248619] [2022-11-03 04:15:14,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:15:14,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 04:15:14,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:15:14,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 04:15:14,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:15:14,912 INFO L87 Difference]: Start difference. First operand 897 states and 1160 transitions. Second operand has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:15:19,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:15:19,541 INFO L93 Difference]: Finished difference Result 2817 states and 3783 transitions. [2022-11-03 04:15:19,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 04:15:19,542 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:15:19,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:15:19,545 INFO L225 Difference]: With dead ends: 2817 [2022-11-03 04:15:19,546 INFO L226 Difference]: Without dead ends: 2480 [2022-11-03 04:15:19,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2022-11-03 04:15:19,547 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 4112 mSDsluCounter, 5538 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4112 SdHoareTripleChecker+Valid, 5995 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:15:19,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4112 Valid, 5995 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 416 Invalid, 0 Unknown, 68 Unchecked, 1.4s Time] [2022-11-03 04:15:19,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2022-11-03 04:15:19,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 899. [2022-11-03 04:15:19,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 898 states have (on average 1.2939866369710469) internal successors, (1162), 898 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states 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 04:15:19,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1162 transitions. [2022-11-03 04:15:19,582 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1162 transitions. Word has length 310 [2022-11-03 04:15:19,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:15:19,583 INFO L495 AbstractCegarLoop]: Abstraction has 899 states and 1162 transitions. [2022-11-03 04:15:19,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:15:19,584 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1162 transitions. [2022-11-03 04:15:19,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:15:19,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:15:19,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:15:19,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-03 04:15:19,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:15:19,813 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:15:19,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:15:19,813 INFO L85 PathProgramCache]: Analyzing trace with hash -413830653, now seen corresponding path program 1 times [2022-11-03 04:15:19,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:15:19,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965890222] [2022-11-03 04:15:19,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:15:19,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:15:19,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:15:19,817 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:15:19,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-03 04:15:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:15:20,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-03 04:15:20,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:15:25,111 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:15:25,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:15:25,111 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:15:25,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965890222] [2022-11-03 04:15:25,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965890222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:15:25,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:15:25,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-03 04:15:25,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7625804] [2022-11-03 04:15:25,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:15:25,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-03 04:15:25,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:15:25,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-03 04:15:25,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2022-11-03 04:15:25,114 INFO L87 Difference]: Start difference. First operand 899 states and 1162 transitions. Second operand has 24 states, 24 states have (on average 12.916666666666666) internal successors, (310), 24 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:15:25,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:15:25,744 INFO L93 Difference]: Finished difference Result 2081 states and 2739 transitions. [2022-11-03 04:15:25,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 04:15:25,745 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 12.916666666666666) internal successors, (310), 24 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:15:25,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:15:25,749 INFO L225 Difference]: With dead ends: 2081 [2022-11-03 04:15:25,749 INFO L226 Difference]: Without dead ends: 1744 [2022-11-03 04:15:25,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=56, Invalid=594, Unknown=0, NotChecked=0, Total=650 [2022-11-03 04:15:25,751 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 901 mSDsluCounter, 8054 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 8460 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 705 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:15:25,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 8460 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 705 Unchecked, 0.4s Time] [2022-11-03 04:15:25,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2022-11-03 04:15:25,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1209. [2022-11-03 04:15:25,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 1208 states have (on average 1.2822847682119205) internal successors, (1549), 1208 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states 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 04:15:25,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1549 transitions. [2022-11-03 04:15:25,801 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1549 transitions. Word has length 310 [2022-11-03 04:15:25,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:15:25,802 INFO L495 AbstractCegarLoop]: Abstraction has 1209 states and 1549 transitions. [2022-11-03 04:15:25,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 12.916666666666666) internal successors, (310), 24 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:15:25,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1549 transitions. [2022-11-03 04:15:25,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:15:25,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:15:25,806 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:15:25,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-03 04:15:26,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:15:26,023 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:15:26,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:15:26,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1229877883, now seen corresponding path program 1 times [2022-11-03 04:15:26,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:15:26,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030014280] [2022-11-03 04:15:26,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:15:26,026 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:15:26,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:15:26,027 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:15:26,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-03 04:15:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:15:26,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 253 conjunts are in the unsatisfiable core [2022-11-03 04:15:26,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:15:57,272 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:15:57,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:15:57,272 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:15:57,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030014280] [2022-11-03 04:15:57,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030014280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:15:57,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:15:57,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-03 04:15:57,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205846645] [2022-11-03 04:15:57,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:15:57,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 04:15:57,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:15:57,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 04:15:57,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2022-11-03 04:15:57,276 INFO L87 Difference]: Start difference. First operand 1209 states and 1549 transitions. Second operand has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:15:57,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:15:57,779 INFO L93 Difference]: Finished difference Result 2144 states and 2850 transitions. [2022-11-03 04:15:57,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 04:15:57,781 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:15:57,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:15:57,783 INFO L225 Difference]: With dead ends: 2144 [2022-11-03 04:15:57,783 INFO L226 Difference]: Without dead ends: 1807 [2022-11-03 04:15:57,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2022-11-03 04:15:57,785 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 983 mSDsluCounter, 7623 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 7931 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 494 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:15:57,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 7931 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 494 Unchecked, 0.2s Time] [2022-11-03 04:15:57,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2022-11-03 04:15:57,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1221. [2022-11-03 04:15:57,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 1220 states have (on average 1.2827868852459017) internal successors, (1565), 1220 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states 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 04:15:57,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1565 transitions. [2022-11-03 04:15:57,822 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1565 transitions. Word has length 310 [2022-11-03 04:15:57,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:15:57,822 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 1565 transitions. [2022-11-03 04:15:57,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:15:57,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1565 transitions. [2022-11-03 04:15:57,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:15:57,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:15:57,827 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:15:57,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-03 04:15:58,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:15:58,041 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:15:58,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:15:58,041 INFO L85 PathProgramCache]: Analyzing trace with hash 369271175, now seen corresponding path program 1 times [2022-11-03 04:15:58,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:15:58,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617228178] [2022-11-03 04:15:58,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:15:58,045 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:15:58,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:15:58,046 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:15:58,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-03 04:15:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:15:59,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:15:59,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:15:59,282 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:15:59,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:15:59,283 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:15:59,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617228178] [2022-11-03 04:15:59,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617228178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:15:59,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:15:59,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:15:59,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548985350] [2022-11-03 04:15:59,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:15:59,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:15:59,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:15:59,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:15:59,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:15:59,286 INFO L87 Difference]: Start difference. First operand 1221 states and 1565 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:15:59,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:15:59,541 INFO L93 Difference]: Finished difference Result 1589 states and 2075 transitions. [2022-11-03 04:15:59,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:15:59,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:15:59,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:15:59,543 INFO L225 Difference]: With dead ends: 1589 [2022-11-03 04:15:59,544 INFO L226 Difference]: Without dead ends: 1252 [2022-11-03 04:15:59,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 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 04:15:59,545 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 463 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:15:59,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 649 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:15:59,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2022-11-03 04:15:59,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1221. [2022-11-03 04:15:59,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 1220 states have (on average 1.2819672131147541) internal successors, (1564), 1220 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states 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 04:15:59,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1564 transitions. [2022-11-03 04:15:59,580 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1564 transitions. Word has length 310 [2022-11-03 04:15:59,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:15:59,580 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 1564 transitions. [2022-11-03 04:15:59,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:15:59,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1564 transitions. [2022-11-03 04:15:59,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:15:59,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:15:59,585 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:15:59,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-03 04:15:59,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:15:59,805 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:15:59,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:15:59,806 INFO L85 PathProgramCache]: Analyzing trace with hash 459331465, now seen corresponding path program 1 times [2022-11-03 04:15:59,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:15:59,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332547505] [2022-11-03 04:15:59,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:15:59,808 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:15:59,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:15:59,809 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:15:59,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-03 04:16:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:16:00,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:16:00,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:16:01,020 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:16:01,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:16:01,021 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:16:01,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332547505] [2022-11-03 04:16:01,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332547505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:16:01,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:16:01,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:16:01,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531013554] [2022-11-03 04:16:01,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:16:01,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:16:01,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:16:01,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:16:01,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:16:01,023 INFO L87 Difference]: Start difference. First operand 1221 states and 1564 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:16:01,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:16:01,254 INFO L93 Difference]: Finished difference Result 1593 states and 2078 transitions. [2022-11-03 04:16:01,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:16:01,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:16:01,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:16:01,260 INFO L225 Difference]: With dead ends: 1593 [2022-11-03 04:16:01,260 INFO L226 Difference]: Without dead ends: 1256 [2022-11-03 04:16:01,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 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 04:16:01,262 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 457 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:16:01,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 656 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:16:01,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2022-11-03 04:16:01,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1221. [2022-11-03 04:16:01,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 1220 states have (on average 1.2811475409836066) internal successors, (1563), 1220 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states 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 04:16:01,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1563 transitions. [2022-11-03 04:16:01,295 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1563 transitions. Word has length 310 [2022-11-03 04:16:01,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:16:01,296 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 1563 transitions. [2022-11-03 04:16:01,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:16:01,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1563 transitions. [2022-11-03 04:16:01,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:16:01,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:16:01,300 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:01,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-03 04:16:01,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:16:01,517 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:16:01,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:16:01,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1463918965, now seen corresponding path program 1 times [2022-11-03 04:16:01,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:16:01,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809673171] [2022-11-03 04:16:01,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:16:01,521 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:16:01,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:16:01,522 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:16:01,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-03 04:16:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:16:02,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:16:02,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:16:03,044 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:16:03,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:16:03,044 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:16:03,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809673171] [2022-11-03 04:16:03,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809673171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:16:03,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:16:03,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:16:03,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035563431] [2022-11-03 04:16:03,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:16:03,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:16:03,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:16:03,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:16:03,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:16:03,047 INFO L87 Difference]: Start difference. First operand 1221 states and 1563 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:16:03,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:16:03,472 INFO L93 Difference]: Finished difference Result 2217 states and 2928 transitions. [2022-11-03 04:16:03,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 04:16:03,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:16:03,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:16:03,476 INFO L225 Difference]: With dead ends: 2217 [2022-11-03 04:16:03,476 INFO L226 Difference]: Without dead ends: 1880 [2022-11-03 04:16:03,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 304 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 04:16:03,478 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1103 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:16:03,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 2185 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 57 Unchecked, 0.4s Time] [2022-11-03 04:16:03,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2022-11-03 04:16:03,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1263. [2022-11-03 04:16:03,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1262 states have (on average 1.2852614896988908) internal successors, (1622), 1262 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states 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 04:16:03,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1622 transitions. [2022-11-03 04:16:03,514 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1622 transitions. Word has length 310 [2022-11-03 04:16:03,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:16:03,515 INFO L495 AbstractCegarLoop]: Abstraction has 1263 states and 1622 transitions. [2022-11-03 04:16:03,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:16:03,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1622 transitions. [2022-11-03 04:16:03,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:16:03,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:16:03,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:03,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-03 04:16:03,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:16:03,733 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:16:03,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:16:03,733 INFO L85 PathProgramCache]: Analyzing trace with hash -796537075, now seen corresponding path program 1 times [2022-11-03 04:16:03,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:16:03,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186903378] [2022-11-03 04:16:03,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:16:03,735 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:16:03,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:16:03,736 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:16:03,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-03 04:16:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:16:04,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:16:04,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:16:04,938 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:16:04,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:16:04,939 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:16:04,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186903378] [2022-11-03 04:16:04,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186903378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:16:04,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:16:04,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:16:04,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828519455] [2022-11-03 04:16:04,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:16:04,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:16:04,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:16:04,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:16:04,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:16:04,941 INFO L87 Difference]: Start difference. First operand 1263 states and 1622 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:16:05,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:16:05,195 INFO L93 Difference]: Finished difference Result 1621 states and 2114 transitions. [2022-11-03 04:16:05,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:16:05,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:16:05,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:16:05,202 INFO L225 Difference]: With dead ends: 1621 [2022-11-03 04:16:05,202 INFO L226 Difference]: Without dead ends: 1284 [2022-11-03 04:16:05,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 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 04:16:05,204 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 443 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:16:05,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 683 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:16:05,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2022-11-03 04:16:05,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1263. [2022-11-03 04:16:05,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1262 states have (on average 1.2844690966719492) internal successors, (1621), 1262 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states 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 04:16:05,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1621 transitions. [2022-11-03 04:16:05,240 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1621 transitions. Word has length 310 [2022-11-03 04:16:05,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:16:05,242 INFO L495 AbstractCegarLoop]: Abstraction has 1263 states and 1621 transitions. [2022-11-03 04:16:05,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:16:05,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1621 transitions. [2022-11-03 04:16:05,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:16:05,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:16:05,246 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:05,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-03 04:16:05,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:16:05,462 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:16:05,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:16:05,463 INFO L85 PathProgramCache]: Analyzing trace with hash 2093238543, now seen corresponding path program 1 times [2022-11-03 04:16:05,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:16:05,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136759138] [2022-11-03 04:16:05,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:16:05,465 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:16:05,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:16:05,467 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:16:05,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-03 04:16:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:16:06,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 04:16:06,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:16:07,357 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:16:07,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:16:07,358 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:16:07,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136759138] [2022-11-03 04:16:07,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136759138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:16:07,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:16:07,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:16:07,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671494556] [2022-11-03 04:16:07,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:16:07,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:16:07,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:16:07,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:16:07,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:16:07,360 INFO L87 Difference]: Start difference. First operand 1263 states and 1621 transitions. Second operand has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:16:07,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:16:07,900 INFO L93 Difference]: Finished difference Result 1964 states and 2581 transitions. [2022-11-03 04:16:07,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:16:07,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:16:07,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:16:07,902 INFO L225 Difference]: With dead ends: 1964 [2022-11-03 04:16:07,903 INFO L226 Difference]: Without dead ends: 1627 [2022-11-03 04:16:07,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 305 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 04:16:07,904 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 1095 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:16:07,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 1687 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 04:16:07,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2022-11-03 04:16:07,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1265. [2022-11-03 04:16:07,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 1264 states have (on average 1.2840189873417722) internal successors, (1623), 1264 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states 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 04:16:07,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1623 transitions. [2022-11-03 04:16:07,926 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1623 transitions. Word has length 310 [2022-11-03 04:16:07,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:16:07,926 INFO L495 AbstractCegarLoop]: Abstraction has 1265 states and 1623 transitions. [2022-11-03 04:16:07,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:16:07,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1623 transitions. [2022-11-03 04:16:07,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:16:07,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:16:07,929 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:07,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-03 04:16:08,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:16:08,129 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:16:08,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:16:08,130 INFO L85 PathProgramCache]: Analyzing trace with hash -270603119, now seen corresponding path program 1 times [2022-11-03 04:16:08,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:16:08,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400793787] [2022-11-03 04:16:08,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:16:08,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:16:08,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:16:08,134 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:16:08,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-03 04:16:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:16:09,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 253 conjunts are in the unsatisfiable core [2022-11-03 04:16:09,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:16:40,304 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:16:40,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:16:40,305 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:16:40,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400793787] [2022-11-03 04:16:40,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400793787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:16:40,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:16:40,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-03 04:16:40,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395356216] [2022-11-03 04:16:40,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:16:40,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 04:16:40,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:16:40,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 04:16:40,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2022-11-03 04:16:40,308 INFO L87 Difference]: Start difference. First operand 1265 states and 1623 transitions. Second operand has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:16:40,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:16:40,841 INFO L93 Difference]: Finished difference Result 2154 states and 2838 transitions. [2022-11-03 04:16:40,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 04:16:40,843 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:16:40,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:16:40,847 INFO L225 Difference]: With dead ends: 2154 [2022-11-03 04:16:40,848 INFO L226 Difference]: Without dead ends: 1815 [2022-11-03 04:16:40,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2022-11-03 04:16:40,850 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 781 mSDsluCounter, 7487 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 7792 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 919 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:16:40,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 7792 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 919 Unchecked, 0.2s Time] [2022-11-03 04:16:40,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2022-11-03 04:16:40,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1319. [2022-11-03 04:16:40,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 1.2867981790591805) internal successors, (1696), 1318 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states 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 04:16:40,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1696 transitions. [2022-11-03 04:16:40,889 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1696 transitions. Word has length 310 [2022-11-03 04:16:40,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:16:40,890 INFO L495 AbstractCegarLoop]: Abstraction has 1319 states and 1696 transitions. [2022-11-03 04:16:40,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:16:40,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1696 transitions. [2022-11-03 04:16:40,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:16:40,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:16:40,894 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:40,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-03 04:16:41,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:16:41,122 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:16:41,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:16:41,123 INFO L85 PathProgramCache]: Analyzing trace with hash -426583661, now seen corresponding path program 1 times [2022-11-03 04:16:41,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:16:41,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851774750] [2022-11-03 04:16:41,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:16:41,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:16:41,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:16:41,127 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:16:41,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-03 04:16:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:16:42,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 04:16:42,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:16:42,575 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:16:42,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:16:42,575 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:16:42,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851774750] [2022-11-03 04:16:42,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851774750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:16:42,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:16:42,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:16:42,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623928468] [2022-11-03 04:16:42,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:16:42,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:16:42,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:16:42,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:16:42,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:16:42,578 INFO L87 Difference]: Start difference. First operand 1319 states and 1696 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:16:43,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:16:43,294 INFO L93 Difference]: Finished difference Result 2454 states and 3248 transitions. [2022-11-03 04:16:43,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:16:43,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:16:43,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:16:43,299 INFO L225 Difference]: With dead ends: 2454 [2022-11-03 04:16:43,299 INFO L226 Difference]: Without dead ends: 2115 [2022-11-03 04:16:43,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-11-03 04:16:43,301 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 1807 mSDsluCounter, 2034 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1807 SdHoareTripleChecker+Valid, 2536 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:16:43,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1807 Valid, 2536 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 04:16:43,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2022-11-03 04:16:43,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 1377. [2022-11-03 04:16:43,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1376 states have (on average 1.2899709302325582) internal successors, (1775), 1376 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states 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 04:16:43,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1775 transitions. [2022-11-03 04:16:43,325 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1775 transitions. Word has length 310 [2022-11-03 04:16:43,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:16:43,325 INFO L495 AbstractCegarLoop]: Abstraction has 1377 states and 1775 transitions. [2022-11-03 04:16:43,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:16:43,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1775 transitions. [2022-11-03 04:16:43,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:16:43,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:16:43,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:43,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2022-11-03 04:16:43,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:16:43,529 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:16:43,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:16:43,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2080513813, now seen corresponding path program 1 times [2022-11-03 04:16:43,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:16:43,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265931934] [2022-11-03 04:16:43,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:16:43,532 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:16:43,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:16:43,533 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:16:43,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-03 04:16:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:16:44,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:16:44,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:16:44,750 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:16:44,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:16:44,750 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:16:44,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265931934] [2022-11-03 04:16:44,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265931934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:16:44,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:16:44,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:16:44,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487563696] [2022-11-03 04:16:44,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:16:44,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:16:44,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:16:44,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:16:44,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:16:44,753 INFO L87 Difference]: Start difference. First operand 1377 states and 1775 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:16:45,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:16:45,042 INFO L93 Difference]: Finished difference Result 1819 states and 2381 transitions. [2022-11-03 04:16:45,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:16:45,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:16:45,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:16:45,045 INFO L225 Difference]: With dead ends: 1819 [2022-11-03 04:16:45,045 INFO L226 Difference]: Without dead ends: 1442 [2022-11-03 04:16:45,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 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 04:16:45,047 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 421 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:16:45,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 738 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:16:45,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2022-11-03 04:16:45,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1377. [2022-11-03 04:16:45,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1376 states have (on average 1.2892441860465116) internal successors, (1774), 1376 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states 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 04:16:45,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1774 transitions. [2022-11-03 04:16:45,083 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1774 transitions. Word has length 310 [2022-11-03 04:16:45,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:16:45,084 INFO L495 AbstractCegarLoop]: Abstraction has 1377 states and 1774 transitions. [2022-11-03 04:16:45,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:16:45,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1774 transitions. [2022-11-03 04:16:45,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:16:45,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:16:45,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:45,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2022-11-03 04:16:45,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:16:45,309 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:16:45,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:16:45,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1850986985, now seen corresponding path program 1 times [2022-11-03 04:16:45,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:16:45,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326021019] [2022-11-03 04:16:45,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:16:45,312 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:16:45,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:16:45,313 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:16:45,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-03 04:16:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:16:46,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:16:46,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:16:46,650 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:16:46,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:16:46,651 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:16:46,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326021019] [2022-11-03 04:16:46,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326021019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:16:46,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:16:46,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:16:46,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955174724] [2022-11-03 04:16:46,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:16:46,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:16:46,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:16:46,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:16:46,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:16:46,653 INFO L87 Difference]: Start difference. First operand 1377 states and 1774 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:16:46,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:16:46,904 INFO L93 Difference]: Finished difference Result 1829 states and 2393 transitions. [2022-11-03 04:16:46,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:16:46,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:16:46,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:16:46,906 INFO L225 Difference]: With dead ends: 1829 [2022-11-03 04:16:46,907 INFO L226 Difference]: Without dead ends: 1452 [2022-11-03 04:16:46,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 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 04:16:46,908 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 409 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:16:46,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 761 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:16:46,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2022-11-03 04:16:46,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 1377. [2022-11-03 04:16:46,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1376 states have (on average 1.288517441860465) internal successors, (1773), 1376 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states 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 04:16:46,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1773 transitions. [2022-11-03 04:16:46,932 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1773 transitions. Word has length 310 [2022-11-03 04:16:46,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:16:46,933 INFO L495 AbstractCegarLoop]: Abstraction has 1377 states and 1773 transitions. [2022-11-03 04:16:46,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:16:46,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1773 transitions. [2022-11-03 04:16:46,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:16:46,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:16:46,936 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:46,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Ended with exit code 0 [2022-11-03 04:16:47,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:16:47,154 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:16:47,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:16:47,154 INFO L85 PathProgramCache]: Analyzing trace with hash -989153383, now seen corresponding path program 1 times [2022-11-03 04:16:47,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:16:47,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903312187] [2022-11-03 04:16:47,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:16:47,156 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:16:47,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:16:47,157 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:16:47,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-03 04:16:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:16:48,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-03 04:16:48,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:16:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:16:53,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:16:53,861 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:16:53,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903312187] [2022-11-03 04:16:53,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903312187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:16:53,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:16:53,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-03 04:16:53,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913783481] [2022-11-03 04:16:53,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:16:53,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-03 04:16:53,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:16:53,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-03 04:16:53,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2022-11-03 04:16:53,863 INFO L87 Difference]: Start difference. First operand 1377 states and 1773 transitions. Second operand has 26 states, 26 states have (on average 11.923076923076923) internal successors, (310), 26 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:16:53,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:16:53,932 INFO L93 Difference]: Finished difference Result 1865 states and 2439 transitions. [2022-11-03 04:16:53,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-03 04:16:53,934 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.923076923076923) internal successors, (310), 26 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:16:53,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:16:53,935 INFO L225 Difference]: With dead ends: 1865 [2022-11-03 04:16:53,935 INFO L226 Difference]: Without dead ends: 1488 [2022-11-03 04:16:53,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2022-11-03 04:16:53,936 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 258 mSDsluCounter, 5549 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 5820 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 252 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:16:53,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 5820 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 252 Unchecked, 0.0s Time] [2022-11-03 04:16:53,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2022-11-03 04:16:53,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1479. [2022-11-03 04:16:53,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1478 states have (on average 1.2936400541271988) internal successors, (1912), 1478 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states 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 04:16:53,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 1912 transitions. [2022-11-03 04:16:53,962 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 1912 transitions. Word has length 310 [2022-11-03 04:16:53,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:16:53,963 INFO L495 AbstractCegarLoop]: Abstraction has 1479 states and 1912 transitions. [2022-11-03 04:16:53,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.923076923076923) internal successors, (310), 26 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:16:53,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 1912 transitions. [2022-11-03 04:16:53,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:16:53,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:16:53,967 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:53,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2022-11-03 04:16:54,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:16:54,181 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:16:54,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:16:54,181 INFO L85 PathProgramCache]: Analyzing trace with hash 2023641627, now seen corresponding path program 1 times [2022-11-03 04:16:54,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:16:54,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482008149] [2022-11-03 04:16:54,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:16:54,184 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:16:54,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:16:54,185 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:16:54,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-03 04:16:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:16:55,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:16:55,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:16:55,419 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:16:55,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:16:55,419 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:16:55,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482008149] [2022-11-03 04:16:55,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482008149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:16:55,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:16:55,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:16:55,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364300676] [2022-11-03 04:16:55,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:16:55,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:16:55,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:16:55,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:16:55,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:16:55,421 INFO L87 Difference]: Start difference. First operand 1479 states and 1912 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:16:55,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:16:55,881 INFO L93 Difference]: Finished difference Result 2535 states and 3344 transitions. [2022-11-03 04:16:55,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 04:16:55,881 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:16:55,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:16:55,884 INFO L225 Difference]: With dead ends: 2535 [2022-11-03 04:16:55,884 INFO L226 Difference]: Without dead ends: 2158 [2022-11-03 04:16:55,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 304 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 04:16:55,885 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 786 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:16:55,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 2870 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 51 Unchecked, 0.4s Time] [2022-11-03 04:16:55,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2022-11-03 04:16:55,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 1543. [2022-11-03 04:16:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1542 states have (on average 1.2963683527885863) internal successors, (1999), 1542 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states 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 04:16:55,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 1999 transitions. [2022-11-03 04:16:55,923 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 1999 transitions. Word has length 310 [2022-11-03 04:16:55,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:16:55,923 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 1999 transitions. [2022-11-03 04:16:55,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:16:55,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 1999 transitions. [2022-11-03 04:16:55,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:16:55,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:16:55,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:55,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2022-11-03 04:16:56,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:16:56,126 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:16:56,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:16:56,127 INFO L85 PathProgramCache]: Analyzing trace with hash 301638941, now seen corresponding path program 1 times [2022-11-03 04:16:56,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:16:56,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129207679] [2022-11-03 04:16:56,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:16:56,129 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:16:56,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:16:56,130 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:16:56,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-03 04:16:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:16:57,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:16:57,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:16:58,673 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:16:58,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:17:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:17:00,707 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:17:00,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129207679] [2022-11-03 04:17:00,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129207679] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:17:00,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [207975136] [2022-11-03 04:17:00,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:17:00,707 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:17:00,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:17:00,709 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:17:00,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2022-11-03 04:17:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:17:02,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:17:02,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:17:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 04:17:02,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:17:02,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [207975136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:17:02,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:17:02,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 04:17:02,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271992409] [2022-11-03 04:17:02,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:17:02,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:17:02,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:17:02,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:17:02,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 04:17:02,133 INFO L87 Difference]: Start difference. First operand 1543 states and 1999 transitions. Second operand has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 0 states have call successors, (0), 0 states 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 04:17:02,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:17:02,262 INFO L93 Difference]: Finished difference Result 3488 states and 4621 transitions. [2022-11-03 04:17:02,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:17:02,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:17:02,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:17:02,266 INFO L225 Difference]: With dead ends: 3488 [2022-11-03 04:17:02,267 INFO L226 Difference]: Without dead ends: 3111 [2022-11-03 04:17:02,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 919 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:17:02,269 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1437 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:17:02,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 1710 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:17:02,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2022-11-03 04:17:02,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 1559. [2022-11-03 04:17:02,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1558 states have (on average 1.297175866495507) internal successors, (2021), 1558 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states 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 04:17:02,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2021 transitions. [2022-11-03 04:17:02,323 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2021 transitions. Word has length 310 [2022-11-03 04:17:02,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:17:02,323 INFO L495 AbstractCegarLoop]: Abstraction has 1559 states and 2021 transitions. [2022-11-03 04:17:02,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 0 states have call successors, (0), 0 states 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 04:17:02,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2021 transitions. [2022-11-03 04:17:02,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:17:02,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:17:02,327 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:17:02,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2022-11-03 04:17:02,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (63)] Ended with exit code 0 [2022-11-03 04:17:02,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:17:02,741 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:17:02,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:17:02,741 INFO L85 PathProgramCache]: Analyzing trace with hash 358897243, now seen corresponding path program 1 times [2022-11-03 04:17:02,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:17:02,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965709254] [2022-11-03 04:17:02,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:17:02,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:17:02,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:17:02,745 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:17:02,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-03 04:17:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:17:03,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:17:03,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:17:05,028 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:17:05,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:17:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:17:06,641 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:17:06,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965709254] [2022-11-03 04:17:06,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965709254] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:17:06,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1584179091] [2022-11-03 04:17:06,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:17:06,642 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:17:06,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:17:06,644 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:17:06,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (65)] Waiting until timeout for monitored process [2022-11-03 04:17:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:17:08,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 04:17:08,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:17:09,307 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:17:09,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:17:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:17:09,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1584179091] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:17:09,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557292911] [2022-11-03 04:17:09,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:17:09,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:17:09,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:17:09,952 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:17:09,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-11-03 04:17:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:17:10,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 04:17:10,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:17:11,420 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:17:11,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:17:11,980 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:17:11,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557292911] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:17:11,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:17:11,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 8, 8, 8] total 19 [2022-11-03 04:17:11,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024693913] [2022-11-03 04:17:11,981 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:17:11,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 04:17:11,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:17:11,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 04:17:11,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-03 04:17:11,983 INFO L87 Difference]: Start difference. First operand 1559 states and 2021 transitions. Second operand has 19 states, 19 states have (on average 50.63157894736842) internal successors, (962), 19 states have internal predecessors, (962), 0 states have call successors, (0), 0 states 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 04:17:13,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:17:13,949 INFO L93 Difference]: Finished difference Result 4569 states and 6114 transitions. [2022-11-03 04:17:13,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 04:17:13,950 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 50.63157894736842) internal successors, (962), 19 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:17:13,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:17:13,952 INFO L225 Difference]: With dead ends: 4569 [2022-11-03 04:17:13,952 INFO L226 Difference]: Without dead ends: 4176 [2022-11-03 04:17:13,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1879 GetRequests, 1839 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=435, Invalid=1287, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 04:17:13,954 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 4179 mSDsluCounter, 7107 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4179 SdHoareTripleChecker+Valid, 7401 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:17:13,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4179 Valid, 7401 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 602 Invalid, 0 Unknown, 138 Unchecked, 1.1s Time] [2022-11-03 04:17:13,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2022-11-03 04:17:14,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 2299. [2022-11-03 04:17:14,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 2298 states have (on average 1.305047867711053) internal successors, (2999), 2298 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states 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 04:17:14,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 2999 transitions. [2022-11-03 04:17:14,028 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 2999 transitions. Word has length 310 [2022-11-03 04:17:14,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:17:14,029 INFO L495 AbstractCegarLoop]: Abstraction has 2299 states and 2999 transitions. [2022-11-03 04:17:14,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 50.63157894736842) internal successors, (962), 19 states have internal predecessors, (962), 0 states have call successors, (0), 0 states 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 04:17:14,029 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 2999 transitions. [2022-11-03 04:17:14,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:17:14,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:17:14,034 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:17:14,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-11-03 04:17:14,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (64)] Ended with exit code 0 [2022-11-03 04:17:14,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (65)] Ended with exit code 0 [2022-11-03 04:17:14,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:17:14,657 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:17:14,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:17:14,658 INFO L85 PathProgramCache]: Analyzing trace with hash -660575141, now seen corresponding path program 1 times [2022-11-03 04:17:14,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:17:14,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135540183] [2022-11-03 04:17:14,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:17:14,660 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:17:14,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:17:14,660 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:17:14,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-03 04:17:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:17:15,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 04:17:15,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:17:17,652 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:17:17,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:17:20,314 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:17:20,314 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:17:20,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135540183] [2022-11-03 04:17:20,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135540183] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:17:20,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [679196702] [2022-11-03 04:17:20,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:17:20,315 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:17:20,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:17:20,316 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:17:20,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (68)] Waiting until timeout for monitored process [2022-11-03 04:17:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:17:21,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:17:21,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:17:21,863 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 04:17:21,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:17:21,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [679196702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:17:21,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:17:21,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 04:17:21,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268304564] [2022-11-03 04:17:21,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:17:21,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:17:21,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:17:21,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:17:21,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 04:17:21,865 INFO L87 Difference]: Start difference. First operand 2299 states and 2999 transitions. Second operand has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 04:17:22,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:17:22,048 INFO L93 Difference]: Finished difference Result 4492 states and 5953 transitions. [2022-11-03 04:17:22,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:17:22,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:17:22,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:17:22,052 INFO L225 Difference]: With dead ends: 4492 [2022-11-03 04:17:22,052 INFO L226 Difference]: Without dead ends: 3619 [2022-11-03 04:17:22,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 932 GetRequests, 918 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:17:22,054 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 1082 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:17:22,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 1417 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:17:22,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3619 states. [2022-11-03 04:17:22,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3619 to 2305. [2022-11-03 04:17:22,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 2304 states have (on average 1.3042534722222223) internal successors, (3005), 2304 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states 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 04:17:22,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3005 transitions. [2022-11-03 04:17:22,130 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3005 transitions. Word has length 310 [2022-11-03 04:17:22,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:17:22,130 INFO L495 AbstractCegarLoop]: Abstraction has 2305 states and 3005 transitions. [2022-11-03 04:17:22,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 04:17:22,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3005 transitions. [2022-11-03 04:17:22,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:17:22,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:17:22,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:17:22,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2022-11-03 04:17:22,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (68)] Forceful destruction successful, exit code 0 [2022-11-03 04:17:22,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:17:22,549 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:17:22,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:17:22,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1640247449, now seen corresponding path program 1 times [2022-11-03 04:17:22,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:17:22,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116024147] [2022-11-03 04:17:22,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:17:22,551 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:17:22,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:17:22,552 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:17:22,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-03 04:17:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:17:23,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 04:17:23,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:17:25,464 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:17:25,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:17:28,077 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:17:28,077 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:17:28,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116024147] [2022-11-03 04:17:28,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116024147] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:17:28,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1018849720] [2022-11-03 04:17:28,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:17:28,078 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:17:28,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:17:28,081 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:17:28,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (70)] Waiting until timeout for monitored process [2022-11-03 04:17:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:17:29,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:17:29,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:17:29,553 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 04:17:29,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:17:29,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1018849720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:17:29,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:17:29,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 04:17:29,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987756309] [2022-11-03 04:17:29,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:17:29,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:17:29,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:17:29,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:17:29,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 04:17:29,555 INFO L87 Difference]: Start difference. First operand 2305 states and 3005 transitions. Second operand has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 04:17:29,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:17:29,702 INFO L93 Difference]: Finished difference Result 4528 states and 5995 transitions. [2022-11-03 04:17:29,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:17:29,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:17:29,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:17:29,706 INFO L225 Difference]: With dead ends: 4528 [2022-11-03 04:17:29,706 INFO L226 Difference]: Without dead ends: 3649 [2022-11-03 04:17:29,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 919 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:17:29,708 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 1083 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:17:29,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1416 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:17:29,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3649 states. [2022-11-03 04:17:29,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3649 to 2341. [2022-11-03 04:17:29,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2341 states, 2340 states have (on average 1.3047008547008547) internal successors, (3053), 2340 states have internal predecessors, (3053), 0 states have call successors, (0), 0 states 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 04:17:29,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2341 states to 2341 states and 3053 transitions. [2022-11-03 04:17:29,772 INFO L78 Accepts]: Start accepts. Automaton has 2341 states and 3053 transitions. Word has length 310 [2022-11-03 04:17:29,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:17:29,772 INFO L495 AbstractCegarLoop]: Abstraction has 2341 states and 3053 transitions. [2022-11-03 04:17:29,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 04:17:29,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2341 states and 3053 transitions. [2022-11-03 04:17:29,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:17:29,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:17:29,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:17:29,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2022-11-03 04:17:30,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (70)] Ended with exit code 0 [2022-11-03 04:17:30,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:17:30,202 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:17:30,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:17:30,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1247220439, now seen corresponding path program 1 times [2022-11-03 04:17:30,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:17:30,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761494435] [2022-11-03 04:17:30,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:17:30,205 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:17:30,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:17:30,206 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:17:30,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-03 04:17:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:17:31,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 04:17:31,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:17:33,373 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:17:33,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:17:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:17:35,989 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:17:35,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761494435] [2022-11-03 04:17:35,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761494435] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:17:35,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [599385085] [2022-11-03 04:17:35,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:17:35,990 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:17:35,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:17:35,991 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:17:35,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (72)] Waiting until timeout for monitored process [2022-11-03 04:17:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:17:37,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 04:17:37,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:17:40,200 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:17:40,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:17:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:17:46,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [599385085] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:17:46,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808400569] [2022-11-03 04:17:46,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:17:46,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:17:46,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:17:46,630 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:17:46,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-11-03 04:17:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:17:47,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 04:17:47,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:17:48,580 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 64 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 04:17:48,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:17:49,793 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 29 proven. 61 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 04:17:49,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808400569] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:17:49,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:17:49,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 7, 10, 10] total 27 [2022-11-03 04:17:49,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675975083] [2022-11-03 04:17:49,795 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:17:49,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-03 04:17:49,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:17:49,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-03 04:17:49,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2022-11-03 04:17:49,797 INFO L87 Difference]: Start difference. First operand 2341 states and 3053 transitions. Second operand has 27 states, 27 states have (on average 46.0) internal successors, (1242), 27 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states 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 04:17:51,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:17:51,546 INFO L93 Difference]: Finished difference Result 7279 states and 9588 transitions. [2022-11-03 04:17:51,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-03 04:17:51,548 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 46.0) internal successors, (1242), 27 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:17:51,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:17:51,552 INFO L225 Difference]: With dead ends: 7279 [2022-11-03 04:17:51,552 INFO L226 Difference]: Without dead ends: 6364 [2022-11-03 04:17:51,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1868 GetRequests, 1831 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=339, Invalid=1143, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 04:17:51,554 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 2635 mSDsluCounter, 9661 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2635 SdHoareTripleChecker+Valid, 9954 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 249 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:17:51,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2635 Valid, 9954 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 215 Invalid, 0 Unknown, 249 Unchecked, 0.5s Time] [2022-11-03 04:17:51,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6364 states. [2022-11-03 04:17:51,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6364 to 3719. [2022-11-03 04:17:51,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3719 states, 3718 states have (on average 1.2937062937062938) internal successors, (4810), 3718 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states 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 04:17:51,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3719 states to 3719 states and 4810 transitions. [2022-11-03 04:17:51,628 INFO L78 Accepts]: Start accepts. Automaton has 3719 states and 4810 transitions. Word has length 310 [2022-11-03 04:17:51,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:17:51,629 INFO L495 AbstractCegarLoop]: Abstraction has 3719 states and 4810 transitions. [2022-11-03 04:17:51,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 46.0) internal successors, (1242), 27 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states 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 04:17:51,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3719 states and 4810 transitions. [2022-11-03 04:17:51,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:17:51,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:17:51,634 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:17:51,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Ended with exit code 0 [2022-11-03 04:17:51,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (72)] Ended with exit code 0 [2022-11-03 04:17:52,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-11-03 04:17:52,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:17:52,235 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:17:52,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:17:52,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1756693529, now seen corresponding path program 1 times [2022-11-03 04:17:52,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:17:52,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109877761] [2022-11-03 04:17:52,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:17:52,238 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:17:52,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:17:52,239 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:17:52,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2022-11-03 04:17:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:17:53,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-03 04:17:53,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:17:58,932 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-03 04:17:58,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:18:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 04:18:01,228 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:18:01,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109877761] [2022-11-03 04:18:01,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109877761] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:18:01,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1558258246] [2022-11-03 04:18:01,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:18:01,229 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:18:01,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:18:01,237 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:18:01,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (75)] Waiting until timeout for monitored process [2022-11-03 04:18:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:18:03,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-03 04:18:03,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:18:10,117 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-03 04:18:10,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:18:11,615 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 04:18:11,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1558258246] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:18:11,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269584399] [2022-11-03 04:18:11,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:18:11,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:18:11,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:18:11,616 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:18:11,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-11-03 04:18:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:18:12,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-03 04:18:12,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:18:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-03 04:18:17,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:18:18,305 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 04:18:18,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269584399] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:18:18,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:18:18,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 19, 9, 17, 10] total 40 [2022-11-03 04:18:18,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991676700] [2022-11-03 04:18:18,306 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:18:18,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-03 04:18:18,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:18:18,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-03 04:18:18,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1369, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 04:18:18,307 INFO L87 Difference]: Start difference. First operand 3719 states and 4810 transitions. Second operand has 40 states, 40 states have (on average 11.975) internal successors, (479), 40 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 04:18:25,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:18:25,387 INFO L93 Difference]: Finished difference Result 6217 states and 8116 transitions. [2022-11-03 04:18:25,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-03 04:18:25,387 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 11.975) internal successors, (479), 40 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) Word has length 310 [2022-11-03 04:18:25,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:18:25,392 INFO L225 Difference]: With dead ends: 6217 [2022-11-03 04:18:25,392 INFO L226 Difference]: Without dead ends: 6215 [2022-11-03 04:18:25,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1903 GetRequests, 1820 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 6 DeprecatedPredicates, 1686 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1060, Invalid=5746, Unknown=0, NotChecked=0, Total=6806 [2022-11-03 04:18:25,393 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 3035 mSDsluCounter, 12330 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3035 SdHoareTripleChecker+Valid, 12913 SdHoareTripleChecker+Invalid, 3527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1827 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:18:25,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3035 Valid, 12913 Invalid, 3527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1643 Invalid, 0 Unknown, 1827 Unchecked, 2.0s Time] [2022-11-03 04:18:25,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6215 states. [2022-11-03 04:18:25,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6215 to 3799. [2022-11-03 04:18:25,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3799 states, 3798 states have (on average 1.2938388625592416) internal successors, (4914), 3798 states have internal predecessors, (4914), 0 states have call successors, (0), 0 states 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 04:18:25,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3799 states to 3799 states and 4914 transitions. [2022-11-03 04:18:25,489 INFO L78 Accepts]: Start accepts. Automaton has 3799 states and 4914 transitions. Word has length 310 [2022-11-03 04:18:25,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:18:25,490 INFO L495 AbstractCegarLoop]: Abstraction has 3799 states and 4914 transitions. [2022-11-03 04:18:25,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 11.975) internal successors, (479), 40 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 04:18:25,490 INFO L276 IsEmpty]: Start isEmpty. Operand 3799 states and 4914 transitions. [2022-11-03 04:18:25,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:18:25,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:18:25,495 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:18:25,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (74)] Ended with exit code 0 [2022-11-03 04:18:25,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (75)] Ended with exit code 0 [2022-11-03 04:18:25,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-11-03 04:18:26,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:18:26,105 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:18:26,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:18:26,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1756753111, now seen corresponding path program 1 times [2022-11-03 04:18:26,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:18:26,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659599955] [2022-11-03 04:18:26,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:18:26,107 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:18:26,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:18:26,107 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:18:26,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2022-11-03 04:18:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:18:26,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:18:26,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:18:27,124 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:18:27,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:18:27,124 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:18:27,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659599955] [2022-11-03 04:18:27,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659599955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:18:27,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:18:27,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:18:27,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224865897] [2022-11-03 04:18:27,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:18:27,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:18:27,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:18:27,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:18:27,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:18:27,126 INFO L87 Difference]: Start difference. First operand 3799 states and 4914 transitions. Second operand has 6 states, 6 states have (on average 48.666666666666664) internal successors, (292), 6 states have internal predecessors, (292), 0 states have call successors, (0), 0 states 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 04:18:27,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:18:27,372 INFO L93 Difference]: Finished difference Result 8669 states and 11291 transitions. [2022-11-03 04:18:27,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:18:27,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 48.666666666666664) internal successors, (292), 6 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:18:27,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:18:27,376 INFO L225 Difference]: With dead ends: 8669 [2022-11-03 04:18:27,376 INFO L226 Difference]: Without dead ends: 5838 [2022-11-03 04:18:27,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:18:27,378 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 1237 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:18:27,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 1421 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:18:27,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5838 states. [2022-11-03 04:18:27,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5838 to 3895. [2022-11-03 04:18:27,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3895 states, 3894 states have (on average 1.2850539291217258) internal successors, (5004), 3894 states have internal predecessors, (5004), 0 states have call successors, (0), 0 states 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 04:18:27,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3895 states to 3895 states and 5004 transitions. [2022-11-03 04:18:27,439 INFO L78 Accepts]: Start accepts. Automaton has 3895 states and 5004 transitions. Word has length 310 [2022-11-03 04:18:27,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:18:27,439 INFO L495 AbstractCegarLoop]: Abstraction has 3895 states and 5004 transitions. [2022-11-03 04:18:27,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.666666666666664) internal successors, (292), 6 states have internal predecessors, (292), 0 states have call successors, (0), 0 states 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 04:18:27,440 INFO L276 IsEmpty]: Start isEmpty. Operand 3895 states and 5004 transitions. [2022-11-03 04:18:27,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:18:27,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:18:27,443 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:18:27,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (77)] Ended with exit code 0 [2022-11-03 04:18:27,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:18:27,644 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:18:27,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:18:27,644 INFO L85 PathProgramCache]: Analyzing trace with hash 2014858967, now seen corresponding path program 1 times [2022-11-03 04:18:27,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:18:27,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1018907089] [2022-11-03 04:18:27,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:18:27,646 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:18:27,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:18:27,647 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:18:27,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2022-11-03 04:18:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:18:28,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:18:28,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:18:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 04:18:28,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:18:28,429 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:18:28,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1018907089] [2022-11-03 04:18:28,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1018907089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:18:28,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:18:28,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:18:28,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544900615] [2022-11-03 04:18:28,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:18:28,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:18:28,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:18:28,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:18:28,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:18:28,430 INFO L87 Difference]: Start difference. First operand 3895 states and 5004 transitions. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 04:18:28,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:18:28,609 INFO L93 Difference]: Finished difference Result 7927 states and 10279 transitions. [2022-11-03 04:18:28,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:18:28,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:18:28,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:18:28,613 INFO L225 Difference]: With dead ends: 7927 [2022-11-03 04:18:28,613 INFO L226 Difference]: Without dead ends: 5838 [2022-11-03 04:18:28,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 309 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 04:18:28,615 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 650 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:18:28,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1648 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:18:28,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5838 states. [2022-11-03 04:18:28,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5838 to 3895. [2022-11-03 04:18:28,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3895 states, 3894 states have (on average 1.2788906009244991) internal successors, (4980), 3894 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states 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 04:18:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3895 states to 3895 states and 4980 transitions. [2022-11-03 04:18:28,708 INFO L78 Accepts]: Start accepts. Automaton has 3895 states and 4980 transitions. Word has length 310 [2022-11-03 04:18:28,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:18:28,709 INFO L495 AbstractCegarLoop]: Abstraction has 3895 states and 4980 transitions. [2022-11-03 04:18:28,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 04:18:28,709 INFO L276 IsEmpty]: Start isEmpty. Operand 3895 states and 4980 transitions. [2022-11-03 04:18:28,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:18:28,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:18:28,715 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:18:28,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (78)] Ended with exit code 0 [2022-11-03 04:18:28,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:18:28,928 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:18:28,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:18:28,928 INFO L85 PathProgramCache]: Analyzing trace with hash 2014918549, now seen corresponding path program 1 times [2022-11-03 04:18:28,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:18:28,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916745896] [2022-11-03 04:18:28,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:18:28,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:18:28,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:18:28,931 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:18:28,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2022-11-03 04:18:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:18:29,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-03 04:18:29,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:18:32,198 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 04:18:32,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:18:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 04:18:35,830 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:18:35,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916745896] [2022-11-03 04:18:35,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916745896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:18:35,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [26851094] [2022-11-03 04:18:35,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:18:35,831 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:18:35,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:18:35,832 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:18:35,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (80)] Waiting until timeout for monitored process [2022-11-03 04:18:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:18:37,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-03 04:18:37,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:18:39,789 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-03 04:18:39,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:18:41,122 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 04:18:41,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [26851094] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:18:41,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611284596] [2022-11-03 04:18:41,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:18:41,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:18:41,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:18:41,124 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:18:41,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-11-03 04:18:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:18:41,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-03 04:18:41,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:18:44,107 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-03 04:18:44,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:18:45,799 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-03 04:18:45,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611284596] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:18:45,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:18:45,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 24, 20, 24, 24] total 50 [2022-11-03 04:18:45,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599512501] [2022-11-03 04:18:45,800 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:18:45,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-03 04:18:45,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:18:45,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-03 04:18:45,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=2099, Unknown=0, NotChecked=0, Total=2450 [2022-11-03 04:18:45,802 INFO L87 Difference]: Start difference. First operand 3895 states and 4980 transitions. Second operand has 50 states, 50 states have (on average 9.18) internal successors, (459), 50 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 04:18:56,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:18:56,392 INFO L93 Difference]: Finished difference Result 14088 states and 18733 transitions. [2022-11-03 04:18:56,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-03 04:18:56,393 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 9.18) internal successors, (459), 50 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) Word has length 310 [2022-11-03 04:18:56,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:18:56,400 INFO L225 Difference]: With dead ends: 14088 [2022-11-03 04:18:56,401 INFO L226 Difference]: Without dead ends: 14086 [2022-11-03 04:18:56,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1920 GetRequests, 1812 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2301 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=2216, Invalid=9340, Unknown=0, NotChecked=0, Total=11556 [2022-11-03 04:18:56,403 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 11100 mSDsluCounter, 13363 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11100 SdHoareTripleChecker+Valid, 13729 SdHoareTripleChecker+Invalid, 8849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7170 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:18:56,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11100 Valid, 13729 Invalid, 8849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1587 Invalid, 0 Unknown, 7170 Unchecked, 2.1s Time] [2022-11-03 04:18:56,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14086 states. [2022-11-03 04:18:56,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14086 to 7843. [2022-11-03 04:18:56,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7843 states, 7842 states have (on average 1.296097934200459) internal successors, (10164), 7842 states have internal predecessors, (10164), 0 states have call successors, (0), 0 states 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 04:18:56,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7843 states to 7843 states and 10164 transitions. [2022-11-03 04:18:56,563 INFO L78 Accepts]: Start accepts. Automaton has 7843 states and 10164 transitions. Word has length 310 [2022-11-03 04:18:56,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:18:56,563 INFO L495 AbstractCegarLoop]: Abstraction has 7843 states and 10164 transitions. [2022-11-03 04:18:56,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 9.18) internal successors, (459), 50 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 04:18:56,563 INFO L276 IsEmpty]: Start isEmpty. Operand 7843 states and 10164 transitions. [2022-11-03 04:18:56,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:18:56,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:18:56,569 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:18:56,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-11-03 04:18:56,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (79)] Ended with exit code 0 [2022-11-03 04:18:56,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (80)] Ended with exit code 0 [2022-11-03 04:18:57,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:18:57,170 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:18:57,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:18:57,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1205571923, now seen corresponding path program 1 times [2022-11-03 04:18:57,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:18:57,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873890225] [2022-11-03 04:18:57,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:18:57,172 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:18:57,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:18:57,173 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:18:57,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2022-11-03 04:18:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:18:57,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:18:57,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:18:58,375 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 04:18:58,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:18:58,419 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 04:18:58,419 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:18:58,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873890225] [2022-11-03 04:18:58,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873890225] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 04:18:58,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:18:58,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-03 04:18:58,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28290516] [2022-11-03 04:18:58,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:18:58,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:18:58,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:18:58,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:18:58,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:18:58,421 INFO L87 Difference]: Start difference. First operand 7843 states and 10164 transitions. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 04:18:58,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:18:58,751 INFO L93 Difference]: Finished difference Result 26104 states and 34151 transitions. [2022-11-03 04:18:58,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:18:58,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:18:58,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:18:58,764 INFO L225 Difference]: With dead ends: 26104 [2022-11-03 04:18:58,764 INFO L226 Difference]: Without dead ends: 19843 [2022-11-03 04:18:58,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 612 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-03 04:18:58,770 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1447 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:18:58,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 1422 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:18:58,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19843 states. [2022-11-03 04:18:58,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19843 to 8091. [2022-11-03 04:18:58,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8091 states, 8090 states have (on average 1.2940667490729296) internal successors, (10469), 8090 states have internal predecessors, (10469), 0 states have call successors, (0), 0 states 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 04:18:58,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 10469 transitions. [2022-11-03 04:18:58,942 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 10469 transitions. Word has length 310 [2022-11-03 04:18:58,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:18:58,943 INFO L495 AbstractCegarLoop]: Abstraction has 8091 states and 10469 transitions. [2022-11-03 04:18:58,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 04:18:58,943 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 10469 transitions. [2022-11-03 04:18:58,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:18:58,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:18:58,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:18:58,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (82)] Ended with exit code 0 [2022-11-03 04:18:59,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:18:59,151 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:18:59,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:18:59,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1326189799, now seen corresponding path program 1 times [2022-11-03 04:18:59,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:18:59,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083255123] [2022-11-03 04:18:59,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:18:59,153 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:18:59,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:18:59,154 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:18:59,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2022-11-03 04:18:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:18:59,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-03 04:18:59,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:19:01,006 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 04:19:01,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:19:03,083 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 04:19:03,083 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:19:03,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083255123] [2022-11-03 04:19:03,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083255123] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:19:03,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1888666998] [2022-11-03 04:19:03,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:19:03,084 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:19:03,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:19:03,084 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:19:03,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (84)] Waiting until timeout for monitored process [2022-11-03 04:19:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:19:04,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 04:19:04,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:19:05,869 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 04:19:05,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:19:07,076 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 04:19:07,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1888666998] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:19:07,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85206238] [2022-11-03 04:19:07,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:19:07,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:19:07,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:19:07,080 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:19:07,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-11-03 04:19:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:19:07,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-03 04:19:07,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:19:08,807 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 04:19:08,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:19:10,041 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 04:19:10,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85206238] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:19:10,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:19:10,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15, 13, 14, 14] total 28 [2022-11-03 04:19:10,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803544468] [2022-11-03 04:19:10,042 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:19:10,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 04:19:10,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:19:10,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 04:19:10,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2022-11-03 04:19:10,043 INFO L87 Difference]: Start difference. First operand 8091 states and 10469 transitions. Second operand has 28 states, 28 states have (on average 15.75) internal successors, (441), 28 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 04:19:13,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:19:13,304 INFO L93 Difference]: Finished difference Result 20012 states and 26122 transitions. [2022-11-03 04:19:13,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-03 04:19:13,305 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 15.75) internal successors, (441), 28 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) Word has length 310 [2022-11-03 04:19:13,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:19:13,316 INFO L225 Difference]: With dead ends: 20012 [2022-11-03 04:19:13,316 INFO L226 Difference]: Without dead ends: 20010 [2022-11-03 04:19:13,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1888 GetRequests, 1826 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=954, Invalid=2828, Unknown=0, NotChecked=0, Total=3782 [2022-11-03 04:19:13,320 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 3550 mSDsluCounter, 10540 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3550 SdHoareTripleChecker+Valid, 11446 SdHoareTripleChecker+Invalid, 2111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1115 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:19:13,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3550 Valid, 11446 Invalid, 2111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 976 Invalid, 0 Unknown, 1115 Unchecked, 1.2s Time] [2022-11-03 04:19:13,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20010 states. [2022-11-03 04:19:13,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20010 to 8099. [2022-11-03 04:19:13,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8099 states, 8098 states have (on average 1.293776241047172) internal successors, (10477), 8098 states have internal predecessors, (10477), 0 states have call successors, (0), 0 states 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 04:19:13,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8099 states to 8099 states and 10477 transitions. [2022-11-03 04:19:13,564 INFO L78 Accepts]: Start accepts. Automaton has 8099 states and 10477 transitions. Word has length 310 [2022-11-03 04:19:13,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:19:13,564 INFO L495 AbstractCegarLoop]: Abstraction has 8099 states and 10477 transitions. [2022-11-03 04:19:13,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 15.75) internal successors, (441), 28 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 04:19:13,564 INFO L276 IsEmpty]: Start isEmpty. Operand 8099 states and 10477 transitions. [2022-11-03 04:19:13,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:19:13,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:19:13,569 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:13,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-11-03 04:19:13,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (83)] Ended with exit code 0 [2022-11-03 04:19:13,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (84)] Ended with exit code 0 [2022-11-03 04:19:14,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:19:14,170 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:19:14,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:19:14,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1268931497, now seen corresponding path program 1 times [2022-11-03 04:19:14,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:19:14,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558091026] [2022-11-03 04:19:14,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:19:14,172 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:19:14,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:19:14,173 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:19:14,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2022-11-03 04:19:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:19:14,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:19:14,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:19:15,355 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 04:19:15,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:19:15,397 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 04:19:15,397 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:19:15,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558091026] [2022-11-03 04:19:15,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558091026] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 04:19:15,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:19:15,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-03 04:19:15,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484603276] [2022-11-03 04:19:15,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:19:15,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:19:15,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:19:15,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:19:15,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:19:15,399 INFO L87 Difference]: Start difference. First operand 8099 states and 10477 transitions. Second operand has 5 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 04:19:15,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:19:15,641 INFO L93 Difference]: Finished difference Result 20661 states and 27014 transitions. [2022-11-03 04:19:15,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:19:15,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:19:15,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:19:15,650 INFO L225 Difference]: With dead ends: 20661 [2022-11-03 04:19:15,650 INFO L226 Difference]: Without dead ends: 14142 [2022-11-03 04:19:15,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 612 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-03 04:19:15,655 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 864 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:19:15,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 1592 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:19:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14142 states. [2022-11-03 04:19:15,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14142 to 8099. [2022-11-03 04:19:15,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8099 states, 8098 states have (on average 1.2880958261299087) internal successors, (10431), 8098 states have internal predecessors, (10431), 0 states have call successors, (0), 0 states 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 04:19:15,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8099 states to 8099 states and 10431 transitions. [2022-11-03 04:19:15,822 INFO L78 Accepts]: Start accepts. Automaton has 8099 states and 10431 transitions. Word has length 310 [2022-11-03 04:19:15,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:19:15,822 INFO L495 AbstractCegarLoop]: Abstraction has 8099 states and 10431 transitions. [2022-11-03 04:19:15,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 04:19:15,822 INFO L276 IsEmpty]: Start isEmpty. Operand 8099 states and 10431 transitions. [2022-11-03 04:19:15,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:19:15,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:19:15,828 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:15,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (86)] Ended with exit code 0 [2022-11-03 04:19:16,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:19:16,028 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:19:16,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:19:16,029 INFO L85 PathProgramCache]: Analyzing trace with hash 993850195, now seen corresponding path program 1 times [2022-11-03 04:19:16,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:19:16,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495499746] [2022-11-03 04:19:16,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:19:16,030 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:19:16,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:19:16,031 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:19:16,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2022-11-03 04:19:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:19:16,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:19:16,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:19:17,230 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 04:19:17,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:19:17,269 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 04:19:17,270 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:19:17,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495499746] [2022-11-03 04:19:17,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495499746] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 04:19:17,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:19:17,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-03 04:19:17,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116377966] [2022-11-03 04:19:17,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:19:17,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:19:17,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:19:17,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:19:17,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:19:17,272 INFO L87 Difference]: Start difference. First operand 8099 states and 10431 transitions. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 04:19:17,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:19:17,572 INFO L93 Difference]: Finished difference Result 20775 states and 27042 transitions. [2022-11-03 04:19:17,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:19:17,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:19:17,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:19:17,581 INFO L225 Difference]: With dead ends: 20775 [2022-11-03 04:19:17,581 INFO L226 Difference]: Without dead ends: 14178 [2022-11-03 04:19:17,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 614 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:19:17,586 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 871 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:19:17,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 1726 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:19:17,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14178 states. [2022-11-03 04:19:17,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14178 to 8099. [2022-11-03 04:19:17,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8099 states, 8098 states have (on average 1.2799456655964436) internal successors, (10365), 8098 states have internal predecessors, (10365), 0 states have call successors, (0), 0 states 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 04:19:17,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8099 states to 8099 states and 10365 transitions. [2022-11-03 04:19:17,747 INFO L78 Accepts]: Start accepts. Automaton has 8099 states and 10365 transitions. Word has length 310 [2022-11-03 04:19:17,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:19:17,747 INFO L495 AbstractCegarLoop]: Abstraction has 8099 states and 10365 transitions. [2022-11-03 04:19:17,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 04:19:17,748 INFO L276 IsEmpty]: Start isEmpty. Operand 8099 states and 10365 transitions. [2022-11-03 04:19:17,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:19:17,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:19:17,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:17,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2022-11-03 04:19:17,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:19:17,955 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:19:17,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:19:17,956 INFO L85 PathProgramCache]: Analyzing trace with hash 184503569, now seen corresponding path program 1 times [2022-11-03 04:19:17,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:19:17,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346606639] [2022-11-03 04:19:17,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:19:17,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:19:17,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:19:17,958 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:19:17,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2022-11-03 04:19:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:19:18,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-03 04:19:18,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:19:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 04:19:19,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:19:22,557 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 04:19:22,557 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:19:22,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346606639] [2022-11-03 04:19:22,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346606639] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:19:22,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [23915144] [2022-11-03 04:19:22,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:19:22,558 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:19:22,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:19:22,559 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:19:22,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (89)] Waiting until timeout for monitored process [2022-11-03 04:19:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:19:24,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-03 04:19:24,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:19:25,324 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 04:19:25,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:19:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 04:19:26,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [23915144] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:19:26,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428645084] [2022-11-03 04:19:26,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:19:26,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:19:26,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:19:26,533 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:19:26,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-11-03 04:19:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:19:27,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-03 04:19:27,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:19:28,449 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 04:19:28,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:19:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 04:19:29,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428645084] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:19:29,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:19:29,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 19, 17, 18, 18] total 36 [2022-11-03 04:19:29,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631628300] [2022-11-03 04:19:29,723 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:19:29,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-03 04:19:29,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:19:29,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-03 04:19:29,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1088, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 04:19:29,724 INFO L87 Difference]: Start difference. First operand 8099 states and 10365 transitions. Second operand has 36 states, 36 states have (on average 12.36111111111111) internal successors, (445), 36 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 04:19:33,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:19:33,692 INFO L93 Difference]: Finished difference Result 14323 states and 18673 transitions. [2022-11-03 04:19:33,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-03 04:19:33,693 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 12.36111111111111) internal successors, (445), 36 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:19:33,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:19:33,700 INFO L225 Difference]: With dead ends: 14323 [2022-11-03 04:19:33,700 INFO L226 Difference]: Without dead ends: 14321 [2022-11-03 04:19:33,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1897 GetRequests, 1819 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1153 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1224, Invalid=4782, Unknown=0, NotChecked=0, Total=6006 [2022-11-03 04:19:33,704 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 2198 mSDsluCounter, 12196 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2198 SdHoareTripleChecker+Valid, 12980 SdHoareTripleChecker+Invalid, 2099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1121 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:19:33,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2198 Valid, 12980 Invalid, 2099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 971 Invalid, 0 Unknown, 1121 Unchecked, 1.1s Time] [2022-11-03 04:19:33,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14321 states. [2022-11-03 04:19:33,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14321 to 8107. [2022-11-03 04:19:33,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8107 states, 8106 states have (on average 1.27966938070565) internal successors, (10373), 8106 states have internal predecessors, (10373), 0 states have call successors, (0), 0 states 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 04:19:33,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8107 states to 8107 states and 10373 transitions. [2022-11-03 04:19:33,872 INFO L78 Accepts]: Start accepts. Automaton has 8107 states and 10373 transitions. Word has length 310 [2022-11-03 04:19:33,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:19:33,872 INFO L495 AbstractCegarLoop]: Abstraction has 8107 states and 10373 transitions. [2022-11-03 04:19:33,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 12.36111111111111) internal successors, (445), 36 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 04:19:33,872 INFO L276 IsEmpty]: Start isEmpty. Operand 8107 states and 10373 transitions. [2022-11-03 04:19:33,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:19:33,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:19:33,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:33,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (88)] Ended with exit code 0 [2022-11-03 04:19:34,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-11-03 04:19:34,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (89)] Ended with exit code 0 [2022-11-03 04:19:34,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:19:34,478 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:19:34,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:19:34,479 INFO L85 PathProgramCache]: Analyzing trace with hash -366164155, now seen corresponding path program 1 times [2022-11-03 04:19:34,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:19:34,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833682417] [2022-11-03 04:19:34,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:19:34,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:19:34,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:19:34,481 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:19:34,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2022-11-03 04:19:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:19:35,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:19:35,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:19:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 82 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:19:36,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:19:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 82 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:19:38,117 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:19:38,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833682417] [2022-11-03 04:19:38,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833682417] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:19:38,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1001946180] [2022-11-03 04:19:38,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:19:38,118 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:19:38,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:19:38,118 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:19:38,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (92)] Waiting until timeout for monitored process [2022-11-03 04:19:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:19:39,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 04:19:39,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:19:40,518 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:19:40,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:19:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:19:40,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1001946180] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:19:40,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930148671] [2022-11-03 04:19:40,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:19:40,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:19:40,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:19:41,000 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:19:41,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-11-03 04:19:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:19:41,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:19:41,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:19:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 80 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:19:42,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:19:43,520 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 80 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:19:43,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930148671] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:19:43,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:19:43,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 7, 7] total 29 [2022-11-03 04:19:43,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031190235] [2022-11-03 04:19:43,521 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:19:43,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-03 04:19:43,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:19:43,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-03 04:19:43,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=740, Unknown=0, NotChecked=0, Total=812 [2022-11-03 04:19:43,523 INFO L87 Difference]: Start difference. First operand 8107 states and 10373 transitions. Second operand has 29 states, 29 states have (on average 46.62068965517241) internal successors, (1352), 29 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states 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 04:20:17,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:20:17,837 INFO L93 Difference]: Finished difference Result 49019 states and 65006 transitions. [2022-11-03 04:20:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-11-03 04:20:17,839 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 46.62068965517241) internal successors, (1352), 29 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:20:17,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:20:17,859 INFO L225 Difference]: With dead ends: 49019 [2022-11-03 04:20:17,860 INFO L226 Difference]: Without dead ends: 46718 [2022-11-03 04:20:17,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2021 GetRequests, 1827 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14417 ImplicationChecksByTransitivity, 28.9s TimeCoverageRelationStatistics Valid=7397, Invalid=30823, Unknown=0, NotChecked=0, Total=38220 [2022-11-03 04:20:17,867 INFO L413 NwaCegarLoop]: 1127 mSDtfsCounter, 23446 mSDsluCounter, 13958 mSDsCounter, 0 mSdLazyCounter, 3024 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23446 SdHoareTripleChecker+Valid, 15085 SdHoareTripleChecker+Invalid, 3207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 3024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:20:17,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23446 Valid, 15085 Invalid, 3207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 3024 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-03 04:20:17,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46718 states. [2022-11-03 04:20:18,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46718 to 9190. [2022-11-03 04:20:18,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9190 states, 9189 states have (on average 1.2853411687887693) internal successors, (11811), 9189 states have internal predecessors, (11811), 0 states have call successors, (0), 0 states 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 04:20:18,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9190 states to 9190 states and 11811 transitions. [2022-11-03 04:20:18,135 INFO L78 Accepts]: Start accepts. Automaton has 9190 states and 11811 transitions. Word has length 310 [2022-11-03 04:20:18,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:20:18,135 INFO L495 AbstractCegarLoop]: Abstraction has 9190 states and 11811 transitions. [2022-11-03 04:20:18,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 46.62068965517241) internal successors, (1352), 29 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states 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 04:20:18,135 INFO L276 IsEmpty]: Start isEmpty. Operand 9190 states and 11811 transitions. [2022-11-03 04:20:18,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:20:18,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:20:18,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:18,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-11-03 04:20:18,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (92)] Ended with exit code 0 [2022-11-03 04:20:18,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (91)] Ended with exit code 0 [2022-11-03 04:20:18,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:20:18,757 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:20:18,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:20:18,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1423328221, now seen corresponding path program 1 times [2022-11-03 04:20:18,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:20:18,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742522218] [2022-11-03 04:20:18,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:20:18,759 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:20:18,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:20:18,760 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:20:18,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2022-11-03 04:20:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:20:19,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 04:20:19,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:20:19,924 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:20:19,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:20:19,924 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:20:19,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742522218] [2022-11-03 04:20:19,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742522218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:20:19,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:20:19,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:20:19,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298144339] [2022-11-03 04:20:19,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:20:19,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:20:19,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:20:19,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:20:19,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:20:19,925 INFO L87 Difference]: Start difference. First operand 9190 states and 11811 transitions. Second operand has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:20:20,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:20:20,429 INFO L93 Difference]: Finished difference Result 17989 states and 23165 transitions. [2022-11-03 04:20:20,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:20:20,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:20:20,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:20:20,436 INFO L225 Difference]: With dead ends: 17989 [2022-11-03 04:20:20,436 INFO L226 Difference]: Without dead ends: 11567 [2022-11-03 04:20:20,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 306 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 04:20:20,440 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 727 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:20:20,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1328 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:20:20,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11567 states. [2022-11-03 04:20:20,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11567 to 8590. [2022-11-03 04:20:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8590 states, 8589 states have (on average 1.2774478984747932) internal successors, (10972), 8589 states have internal predecessors, (10972), 0 states have call successors, (0), 0 states 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 04:20:20,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8590 states to 8590 states and 10972 transitions. [2022-11-03 04:20:20,612 INFO L78 Accepts]: Start accepts. Automaton has 8590 states and 10972 transitions. Word has length 310 [2022-11-03 04:20:20,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:20:20,612 INFO L495 AbstractCegarLoop]: Abstraction has 8590 states and 10972 transitions. [2022-11-03 04:20:20,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:20:20,613 INFO L276 IsEmpty]: Start isEmpty. Operand 8590 states and 10972 transitions. [2022-11-03 04:20:20,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:20:20,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:20:20,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:20,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (94)] Ended with exit code 0 [2022-11-03 04:20:20,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:20:20,818 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:20:20,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:20:20,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1717864969, now seen corresponding path program 1 times [2022-11-03 04:20:20,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:20:20,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614659057] [2022-11-03 04:20:20,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:20:20,820 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:20:20,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:20:20,821 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:20:20,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2022-11-03 04:20:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:20:21,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 196 conjunts are in the unsatisfiable core [2022-11-03 04:20:21,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:20:44,201 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:20:44,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:20:44,201 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:20:44,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614659057] [2022-11-03 04:20:44,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614659057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:20:44,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:20:44,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-03 04:20:44,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550067695] [2022-11-03 04:20:44,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:20:44,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 04:20:44,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:20:44,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 04:20:44,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-03 04:20:44,203 INFO L87 Difference]: Start difference. First operand 8590 states and 10972 transitions. Second operand has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:20:44,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:20:44,604 INFO L93 Difference]: Finished difference Result 16883 states and 21848 transitions. [2022-11-03 04:20:44,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 04:20:44,605 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:20:44,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:20:44,612 INFO L225 Difference]: With dead ends: 16883 [2022-11-03 04:20:44,612 INFO L226 Difference]: Without dead ends: 12633 [2022-11-03 04:20:44,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:20:44,616 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 162 mSDsluCounter, 4562 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 5002 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:20:44,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 5002 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 189 Unchecked, 0.1s Time] [2022-11-03 04:20:44,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12633 states. [2022-11-03 04:20:44,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12633 to 9114. [2022-11-03 04:20:44,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9114 states, 9113 states have (on average 1.2688467025128938) internal successors, (11563), 9113 states have internal predecessors, (11563), 0 states have call successors, (0), 0 states 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 04:20:44,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9114 states to 9114 states and 11563 transitions. [2022-11-03 04:20:44,840 INFO L78 Accepts]: Start accepts. Automaton has 9114 states and 11563 transitions. Word has length 310 [2022-11-03 04:20:44,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:20:44,840 INFO L495 AbstractCegarLoop]: Abstraction has 9114 states and 11563 transitions. [2022-11-03 04:20:44,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:20:44,841 INFO L276 IsEmpty]: Start isEmpty. Operand 9114 states and 11563 transitions. [2022-11-03 04:20:44,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:20:44,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:20:44,848 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:44,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2022-11-03 04:20:45,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:20:45,061 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:20:45,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:20:45,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1471252231, now seen corresponding path program 1 times [2022-11-03 04:20:45,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:20:45,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142320783] [2022-11-03 04:20:45,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:20:45,063 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:20:45,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:20:45,064 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:20:45,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2022-11-03 04:20:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:20:45,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 145 conjunts are in the unsatisfiable core [2022-11-03 04:20:45,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:20:53,840 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:20:53,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:20:53,840 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:20:53,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142320783] [2022-11-03 04:20:53,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142320783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:20:53,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:20:53,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-11-03 04:20:53,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127527695] [2022-11-03 04:20:53,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:20:53,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-03 04:20:53,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:20:53,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-03 04:20:53,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-11-03 04:20:53,842 INFO L87 Difference]: Start difference. First operand 9114 states and 11563 transitions. Second operand has 23 states, 23 states have (on average 13.478260869565217) internal successors, (310), 23 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:20:55,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:20:55,927 INFO L93 Difference]: Finished difference Result 18883 states and 24363 transitions. [2022-11-03 04:20:55,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 04:20:55,927 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 13.478260869565217) internal successors, (310), 23 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:20:55,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:20:55,935 INFO L225 Difference]: With dead ends: 18883 [2022-11-03 04:20:55,935 INFO L226 Difference]: Without dead ends: 14665 [2022-11-03 04:20:55,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=131, Invalid=925, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 04:20:55,940 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 1089 mSDsluCounter, 11439 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 12036 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 658 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:20:55,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 12036 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 491 Invalid, 0 Unknown, 658 Unchecked, 0.7s Time] [2022-11-03 04:20:55,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14665 states. [2022-11-03 04:20:56,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14665 to 9478. [2022-11-03 04:20:56,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9478 states, 9477 states have (on average 1.2633744855967077) internal successors, (11973), 9477 states have internal predecessors, (11973), 0 states have call successors, (0), 0 states 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 04:20:56,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9478 states to 9478 states and 11973 transitions. [2022-11-03 04:20:56,164 INFO L78 Accepts]: Start accepts. Automaton has 9478 states and 11973 transitions. Word has length 310 [2022-11-03 04:20:56,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:20:56,164 INFO L495 AbstractCegarLoop]: Abstraction has 9478 states and 11973 transitions. [2022-11-03 04:20:56,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 13.478260869565217) internal successors, (310), 23 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:20:56,164 INFO L276 IsEmpty]: Start isEmpty. Operand 9478 states and 11973 transitions. [2022-11-03 04:20:56,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:20:56,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:20:56,171 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:56,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (96)] Ended with exit code 0 [2022-11-03 04:20:56,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:20:56,372 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:20:56,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:20:56,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1666182775, now seen corresponding path program 1 times [2022-11-03 04:20:56,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:20:56,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127493799] [2022-11-03 04:20:56,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:20:56,374 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:20:56,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:20:56,375 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:20:56,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2022-11-03 04:20:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:20:57,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-03 04:20:57,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:20:58,596 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:20:58,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:20:58,597 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:20:58,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127493799] [2022-11-03 04:20:58,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127493799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:20:58,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:20:58,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 04:20:58,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676002580] [2022-11-03 04:20:58,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:20:58,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 04:20:58,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:20:58,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 04:20:58,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:20:58,599 INFO L87 Difference]: Start difference. First operand 9478 states and 11973 transitions. Second operand has 16 states, 16 states have (on average 19.375) internal successors, (310), 16 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:21:04,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:04,778 INFO L93 Difference]: Finished difference Result 54374 states and 70648 transitions. [2022-11-03 04:21:04,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-03 04:21:04,779 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 19.375) internal successors, (310), 16 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:21:04,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:04,806 INFO L225 Difference]: With dead ends: 54374 [2022-11-03 04:21:04,806 INFO L226 Difference]: Without dead ends: 50242 [2022-11-03 04:21:04,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1292 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1139, Invalid=3973, Unknown=0, NotChecked=0, Total=5112 [2022-11-03 04:21:04,814 INFO L413 NwaCegarLoop]: 1450 mSDtfsCounter, 4466 mSDsluCounter, 16434 mSDsCounter, 0 mSdLazyCounter, 3062 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4466 SdHoareTripleChecker+Valid, 17884 SdHoareTripleChecker+Invalid, 3113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 3062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:04,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4466 Valid, 17884 Invalid, 3113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 3062 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-03 04:21:04,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50242 states. [2022-11-03 04:21:05,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50242 to 9732. [2022-11-03 04:21:05,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9732 states, 9731 states have (on average 1.2649265234816565) internal successors, (12309), 9731 states have internal predecessors, (12309), 0 states have call successors, (0), 0 states 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 04:21:05,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9732 states to 9732 states and 12309 transitions. [2022-11-03 04:21:05,099 INFO L78 Accepts]: Start accepts. Automaton has 9732 states and 12309 transitions. Word has length 310 [2022-11-03 04:21:05,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:05,099 INFO L495 AbstractCegarLoop]: Abstraction has 9732 states and 12309 transitions. [2022-11-03 04:21:05,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.375) internal successors, (310), 16 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:21:05,099 INFO L276 IsEmpty]: Start isEmpty. Operand 9732 states and 12309 transitions. [2022-11-03 04:21:05,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:21:05,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:05,104 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:05,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (97)] Ended with exit code 0 [2022-11-03 04:21:05,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:05,305 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:05,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:05,305 INFO L85 PathProgramCache]: Analyzing trace with hash 91444363, now seen corresponding path program 1 times [2022-11-03 04:21:05,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:05,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757245511] [2022-11-03 04:21:05,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:05,307 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:05,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:05,308 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:05,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2022-11-03 04:21:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:06,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-03 04:21:06,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:07,572 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:07,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:07,572 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:07,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757245511] [2022-11-03 04:21:07,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757245511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:07,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:07,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 04:21:07,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233442497] [2022-11-03 04:21:07,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:07,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 04:21:07,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:07,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 04:21:07,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:21:07,574 INFO L87 Difference]: Start difference. First operand 9732 states and 12309 transitions. Second operand has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:21:08,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:08,388 INFO L93 Difference]: Finished difference Result 22546 states and 28895 transitions. [2022-11-03 04:21:08,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 04:21:08,388 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:21:08,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:08,401 INFO L225 Difference]: With dead ends: 22546 [2022-11-03 04:21:08,401 INFO L226 Difference]: Without dead ends: 20298 [2022-11-03 04:21:08,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-11-03 04:21:08,406 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 1939 mSDsluCounter, 7848 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1939 SdHoareTripleChecker+Valid, 8656 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 594 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:08,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1939 Valid, 8656 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 594 Unchecked, 0.3s Time] [2022-11-03 04:21:08,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20298 states. [2022-11-03 04:21:08,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20298 to 9810. [2022-11-03 04:21:08,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9810 states, 9809 states have (on average 1.2648588031399735) internal successors, (12407), 9809 states have internal predecessors, (12407), 0 states have call successors, (0), 0 states 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 04:21:08,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9810 states to 9810 states and 12407 transitions. [2022-11-03 04:21:08,675 INFO L78 Accepts]: Start accepts. Automaton has 9810 states and 12407 transitions. Word has length 310 [2022-11-03 04:21:08,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:08,675 INFO L495 AbstractCegarLoop]: Abstraction has 9810 states and 12407 transitions. [2022-11-03 04:21:08,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:21:08,676 INFO L276 IsEmpty]: Start isEmpty. Operand 9810 states and 12407 transitions. [2022-11-03 04:21:08,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:21:08,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:08,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:08,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (98)] Ended with exit code 0 [2022-11-03 04:21:08,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:08,881 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:08,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:08,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1690593421, now seen corresponding path program 1 times [2022-11-03 04:21:08,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:08,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466880913] [2022-11-03 04:21:08,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:08,883 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:08,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:08,884 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:08,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2022-11-03 04:21:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:09,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:21:09,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:09,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:09,961 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:09,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466880913] [2022-11-03 04:21:09,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466880913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:09,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:09,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:21:09,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507880202] [2022-11-03 04:21:09,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:09,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:21:09,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:09,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:21:09,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:21:09,963 INFO L87 Difference]: Start difference. First operand 9810 states and 12407 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:21:10,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:10,327 INFO L93 Difference]: Finished difference Result 16638 states and 21337 transitions. [2022-11-03 04:21:10,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:21:10,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:21:10,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:10,333 INFO L225 Difference]: With dead ends: 16638 [2022-11-03 04:21:10,333 INFO L226 Difference]: Without dead ends: 10192 [2022-11-03 04:21:10,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:21:10,337 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 116 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:10,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1947 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 60 Unchecked, 0.2s Time] [2022-11-03 04:21:10,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10192 states. [2022-11-03 04:21:10,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10192 to 10192. [2022-11-03 04:21:10,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10192 states, 10191 states have (on average 1.2648415268374056) internal successors, (12890), 10191 states have internal predecessors, (12890), 0 states have call successors, (0), 0 states 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 04:21:10,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10192 states to 10192 states and 12890 transitions. [2022-11-03 04:21:10,520 INFO L78 Accepts]: Start accepts. Automaton has 10192 states and 12890 transitions. Word has length 310 [2022-11-03 04:21:10,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:10,520 INFO L495 AbstractCegarLoop]: Abstraction has 10192 states and 12890 transitions. [2022-11-03 04:21:10,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:21:10,520 INFO L276 IsEmpty]: Start isEmpty. Operand 10192 states and 12890 transitions. [2022-11-03 04:21:10,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:21:10,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:10,525 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:10,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (99)] Ended with exit code 0 [2022-11-03 04:21:10,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:10,726 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:10,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:10,726 INFO L85 PathProgramCache]: Analyzing trace with hash 286724235, now seen corresponding path program 1 times [2022-11-03 04:21:10,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:10,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859566945] [2022-11-03 04:21:10,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:10,728 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:10,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:10,729 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:10,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2022-11-03 04:21:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:11,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-03 04:21:11,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:13,019 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:13,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:13,019 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:13,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859566945] [2022-11-03 04:21:13,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859566945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:13,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:13,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-03 04:21:13,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760748176] [2022-11-03 04:21:13,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:13,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 04:21:13,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:13,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 04:21:13,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-11-03 04:21:13,021 INFO L87 Difference]: Start difference. First operand 10192 states and 12890 transitions. Second operand has 17 states, 17 states have (on average 18.235294117647058) internal successors, (310), 17 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:21:20,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:20,578 INFO L93 Difference]: Finished difference Result 58846 states and 76399 transitions. [2022-11-03 04:21:20,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-03 04:21:20,578 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 18.235294117647058) internal successors, (310), 17 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:21:20,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:20,608 INFO L225 Difference]: With dead ends: 58846 [2022-11-03 04:21:20,608 INFO L226 Difference]: Without dead ends: 54672 [2022-11-03 04:21:20,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2079 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1630, Invalid=5852, Unknown=0, NotChecked=0, Total=7482 [2022-11-03 04:21:20,615 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 4710 mSDsluCounter, 19741 mSDsCounter, 0 mSdLazyCounter, 3776 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4710 SdHoareTripleChecker+Valid, 21355 SdHoareTripleChecker+Invalid, 3829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:20,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4710 Valid, 21355 Invalid, 3829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3776 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-03 04:21:20,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54672 states. [2022-11-03 04:21:20,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54672 to 11014. [2022-11-03 04:21:20,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11014 states, 11013 states have (on average 1.2701352946517752) internal successors, (13988), 11013 states have internal predecessors, (13988), 0 states have call successors, (0), 0 states 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 04:21:20,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11014 states to 11014 states and 13988 transitions. [2022-11-03 04:21:20,925 INFO L78 Accepts]: Start accepts. Automaton has 11014 states and 13988 transitions. Word has length 310 [2022-11-03 04:21:20,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:20,925 INFO L495 AbstractCegarLoop]: Abstraction has 11014 states and 13988 transitions. [2022-11-03 04:21:20,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.235294117647058) internal successors, (310), 17 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:21:20,925 INFO L276 IsEmpty]: Start isEmpty. Operand 11014 states and 13988 transitions. [2022-11-03 04:21:20,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:21:20,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:20,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:20,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (100)] Ended with exit code 0 [2022-11-03 04:21:21,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:21,133 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:21,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:21,133 INFO L85 PathProgramCache]: Analyzing trace with hash -2111263603, now seen corresponding path program 1 times [2022-11-03 04:21:21,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:21,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134703269] [2022-11-03 04:21:21,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:21,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:21,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:21,135 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:21,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2022-11-03 04:21:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:21,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:21:21,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:21,964 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:21,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:21,965 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:21,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134703269] [2022-11-03 04:21:21,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134703269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:21,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:21,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:21:21,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026091340] [2022-11-03 04:21:21,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:21,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:21:21,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:21,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:21:21,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:21:21,967 INFO L87 Difference]: Start difference. First operand 11014 states and 13988 transitions. Second operand has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:21:22,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:22,359 INFO L93 Difference]: Finished difference Result 28706 states and 37337 transitions. [2022-11-03 04:21:22,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:21:22,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:21:22,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:22,369 INFO L225 Difference]: With dead ends: 28706 [2022-11-03 04:21:22,369 INFO L226 Difference]: Without dead ends: 21906 [2022-11-03 04:21:22,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:21:22,373 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 1193 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:22,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 2049 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:21:22,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21906 states. [2022-11-03 04:21:22,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21906 to 13486. [2022-11-03 04:21:22,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13486 states, 13485 states have (on average 1.2815721171672227) internal successors, (17282), 13485 states have internal predecessors, (17282), 0 states have call successors, (0), 0 states 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 04:21:22,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13486 states to 13486 states and 17282 transitions. [2022-11-03 04:21:22,600 INFO L78 Accepts]: Start accepts. Automaton has 13486 states and 17282 transitions. Word has length 310 [2022-11-03 04:21:22,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:22,600 INFO L495 AbstractCegarLoop]: Abstraction has 13486 states and 17282 transitions. [2022-11-03 04:21:22,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:21:22,600 INFO L276 IsEmpty]: Start isEmpty. Operand 13486 states and 17282 transitions. [2022-11-03 04:21:22,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:21:22,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:22,605 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:22,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (101)] Ended with exit code 0 [2022-11-03 04:21:22,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:22,806 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:22,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:22,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1757149195, now seen corresponding path program 1 times [2022-11-03 04:21:22,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:22,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753592791] [2022-11-03 04:21:22,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:22,808 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:22,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:22,809 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:22,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2022-11-03 04:21:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:23,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-03 04:21:23,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:25,127 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:25,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:25,128 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:25,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753592791] [2022-11-03 04:21:25,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753592791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:25,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:25,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 04:21:25,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811733351] [2022-11-03 04:21:25,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:25,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 04:21:25,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:25,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 04:21:25,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:21:25,130 INFO L87 Difference]: Start difference. First operand 13486 states and 17282 transitions. Second operand has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:21:25,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:25,939 INFO L93 Difference]: Finished difference Result 26299 states and 34094 transitions. [2022-11-03 04:21:25,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 04:21:25,940 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:21:25,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:25,952 INFO L225 Difference]: With dead ends: 26299 [2022-11-03 04:21:25,952 INFO L226 Difference]: Without dead ends: 23199 [2022-11-03 04:21:25,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-03 04:21:25,956 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 716 mSDsluCounter, 8670 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 9523 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 516 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:25,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 9523 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 516 Unchecked, 0.3s Time] [2022-11-03 04:21:25,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23199 states. [2022-11-03 04:21:26,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23199 to 13672. [2022-11-03 04:21:26,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13672 states, 13671 states have (on average 1.2819106137078486) internal successors, (17525), 13671 states have internal predecessors, (17525), 0 states have call successors, (0), 0 states 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 04:21:26,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13672 states to 13672 states and 17525 transitions. [2022-11-03 04:21:26,187 INFO L78 Accepts]: Start accepts. Automaton has 13672 states and 17525 transitions. Word has length 310 [2022-11-03 04:21:26,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:26,188 INFO L495 AbstractCegarLoop]: Abstraction has 13672 states and 17525 transitions. [2022-11-03 04:21:26,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:21:26,188 INFO L276 IsEmpty]: Start isEmpty. Operand 13672 states and 17525 transitions. [2022-11-03 04:21:26,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:21:26,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:26,193 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:26,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (102)] Ended with exit code 0 [2022-11-03 04:21:26,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:26,394 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:26,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:26,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1601168653, now seen corresponding path program 1 times [2022-11-03 04:21:26,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:26,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160564316] [2022-11-03 04:21:26,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:26,396 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:26,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:26,397 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:26,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2022-11-03 04:21:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:27,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 04:21:27,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:28,273 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:28,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:28,273 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:28,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160564316] [2022-11-03 04:21:28,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160564316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:28,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:21:28,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 04:21:28,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945782499] [2022-11-03 04:21:28,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:28,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 04:21:28,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:28,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 04:21:28,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:21:28,275 INFO L87 Difference]: Start difference. First operand 13672 states and 17525 transitions. Second operand has 9 states, 9 states have (on average 34.44444444444444) internal successors, (310), 9 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:21:28,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:28,506 INFO L93 Difference]: Finished difference Result 22812 states and 29624 transitions. [2022-11-03 04:21:28,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 04:21:28,507 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 34.44444444444444) internal successors, (310), 9 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:21:28,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:28,515 INFO L225 Difference]: With dead ends: 22812 [2022-11-03 04:21:28,515 INFO L226 Difference]: Without dead ends: 14536 [2022-11-03 04:21:28,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:21:28,521 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 251 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:28,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 2568 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 54 Unchecked, 0.0s Time] [2022-11-03 04:21:28,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14536 states. [2022-11-03 04:21:28,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14536 to 14166. [2022-11-03 04:21:28,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14166 states, 14165 states have (on average 1.2846452523826333) internal successors, (18197), 14165 states have internal predecessors, (18197), 0 states have call successors, (0), 0 states 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 04:21:28,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14166 states to 14166 states and 18197 transitions. [2022-11-03 04:21:28,735 INFO L78 Accepts]: Start accepts. Automaton has 14166 states and 18197 transitions. Word has length 310 [2022-11-03 04:21:28,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:28,735 INFO L495 AbstractCegarLoop]: Abstraction has 14166 states and 18197 transitions. [2022-11-03 04:21:28,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 34.44444444444444) internal successors, (310), 9 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 04:21:28,735 INFO L276 IsEmpty]: Start isEmpty. Operand 14166 states and 18197 transitions. [2022-11-03 04:21:28,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:21:28,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:28,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:28,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (103)] Forceful destruction successful, exit code 0 [2022-11-03 04:21:28,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:28,942 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:28,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:28,942 INFO L85 PathProgramCache]: Analyzing trace with hash 318996367, now seen corresponding path program 1 times [2022-11-03 04:21:28,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:28,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202064280] [2022-11-03 04:21:28,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:28,944 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:28,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:28,945 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:28,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (104)] Waiting until timeout for monitored process [2022-11-03 04:21:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:29,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-03 04:21:29,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:32,196 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 04:21:32,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:21:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 04:21:35,862 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:35,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202064280] [2022-11-03 04:21:35,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202064280] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:21:35,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [432445640] [2022-11-03 04:21:35,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:35,862 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:21:35,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:21:35,864 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:21:35,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (105)] Waiting until timeout for monitored process [2022-11-03 04:21:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:37,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-03 04:21:37,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-03 04:21:39,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:21:41,192 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 04:21:41,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [432445640] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:21:41,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333953652] [2022-11-03 04:21:41,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:41,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:21:41,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:21:41,194 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:21:41,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-11-03 04:21:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:41,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-03 04:21:41,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:44,217 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-03 04:21:44,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:21:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-03 04:21:45,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333953652] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:21:45,860 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:21:45,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 24, 20, 24, 24] total 50 [2022-11-03 04:21:45,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581017108] [2022-11-03 04:21:45,861 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:21:45,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-03 04:21:45,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:45,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-03 04:21:45,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=2099, Unknown=0, NotChecked=0, Total=2450 [2022-11-03 04:21:45,863 INFO L87 Difference]: Start difference. First operand 14166 states and 18197 transitions. Second operand has 50 states, 50 states have (on average 9.18) internal successors, (459), 50 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 04:21:52,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:52,975 INFO L93 Difference]: Finished difference Result 20452 states and 26626 transitions. [2022-11-03 04:21:52,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-03 04:21:52,976 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 9.18) internal successors, (459), 50 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) Word has length 310 [2022-11-03 04:21:52,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:52,984 INFO L225 Difference]: With dead ends: 20452 [2022-11-03 04:21:52,985 INFO L226 Difference]: Without dead ends: 20450 [2022-11-03 04:21:52,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1909 GetRequests, 1815 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1647 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=1507, Invalid=7049, Unknown=0, NotChecked=0, Total=8556 [2022-11-03 04:21:52,987 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 7106 mSDsluCounter, 11758 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7106 SdHoareTripleChecker+Valid, 12138 SdHoareTripleChecker+Invalid, 3993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2855 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:52,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7106 Valid, 12138 Invalid, 3993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1088 Invalid, 0 Unknown, 2855 Unchecked, 1.4s Time] [2022-11-03 04:21:52,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20450 states. [2022-11-03 04:21:53,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20450 to 7492. [2022-11-03 04:21:53,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7492 states, 7491 states have (on average 1.2557735949806434) internal successors, (9407), 7491 states have internal predecessors, (9407), 0 states have call successors, (0), 0 states 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 04:21:53,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7492 states to 7492 states and 9407 transitions. [2022-11-03 04:21:53,119 INFO L78 Accepts]: Start accepts. Automaton has 7492 states and 9407 transitions. Word has length 310 [2022-11-03 04:21:53,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:53,119 INFO L495 AbstractCegarLoop]: Abstraction has 7492 states and 9407 transitions. [2022-11-03 04:21:53,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 9.18) internal successors, (459), 50 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 04:21:53,120 INFO L276 IsEmpty]: Start isEmpty. Operand 7492 states and 9407 transitions. [2022-11-03 04:21:53,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2022-11-03 04:21:53,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:53,126 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:21:53,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (105)] Ended with exit code 0 [2022-11-03 04:21:53,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (104)] Ended with exit code 0 [2022-11-03 04:21:53,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-11-03 04:21:53,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,106 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:21:53,727 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:53,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:53,727 INFO L85 PathProgramCache]: Analyzing trace with hash 310001017, now seen corresponding path program 1 times [2022-11-03 04:21:53,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:53,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256438229] [2022-11-03 04:21:53,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:53,729 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:53,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:53,730 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:53,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (107)] Waiting until timeout for monitored process [2022-11-03 04:21:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:54,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 3538 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 04:21:54,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:55,470 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 305 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:55,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:21:55,955 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 305 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:21:55,955 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:21:55,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256438229] [2022-11-03 04:21:55,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256438229] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:21:55,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [322225524] [2022-11-03 04:21:55,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:55,955 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:21:55,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:21:55,956 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:21:55,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (108)] Waiting until timeout for monitored process [2022-11-03 04:21:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:57,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 3538 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:21:57,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:21:57,811 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 04:21:57,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:21:57,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [322225524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:21:57,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:21:57,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 12 [2022-11-03 04:21:57,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919677306] [2022-11-03 04:21:57,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:21:57,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:21:57,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:21:57,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:21:57,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-03 04:21:57,813 INFO L87 Difference]: Start difference. First operand 7492 states and 9407 transitions. Second operand has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states 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 04:21:58,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:21:58,035 INFO L93 Difference]: Finished difference Result 15650 states and 20178 transitions. [2022-11-03 04:21:58,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:21:58,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 511 [2022-11-03 04:21:58,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:21:58,043 INFO L225 Difference]: With dead ends: 15650 [2022-11-03 04:21:58,043 INFO L226 Difference]: Without dead ends: 12582 [2022-11-03 04:21:58,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1536 GetRequests, 1523 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 04:21:58,046 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1080 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:21:58,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1413 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:21:58,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12582 states. [2022-11-03 04:21:58,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12582 to 7644. [2022-11-03 04:21:58,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7644 states, 7643 states have (on average 1.2506869030485412) internal successors, (9559), 7643 states have internal predecessors, (9559), 0 states have call successors, (0), 0 states 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 04:21:58,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7644 states to 7644 states and 9559 transitions. [2022-11-03 04:21:58,195 INFO L78 Accepts]: Start accepts. Automaton has 7644 states and 9559 transitions. Word has length 511 [2022-11-03 04:21:58,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:21:58,195 INFO L495 AbstractCegarLoop]: Abstraction has 7644 states and 9559 transitions. [2022-11-03 04:21:58,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states 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 04:21:58,195 INFO L276 IsEmpty]: Start isEmpty. Operand 7644 states and 9559 transitions. [2022-11-03 04:21:58,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2022-11-03 04:21:58,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:21:58,201 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:21:58,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (108)] Ended with exit code 0 [2022-11-03 04:21:58,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (107)] Ended with exit code 0 [2022-11-03 04:21:58,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,107 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:21:58,602 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:21:58,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:21:58,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1657803909, now seen corresponding path program 1 times [2022-11-03 04:21:58,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:21:58,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017234194] [2022-11-03 04:21:58,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:21:58,605 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:21:58,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:21:58,605 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:21:58,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (109)] Waiting until timeout for monitored process [2022-11-03 04:21:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:21:59,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 3538 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:21:59,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:22:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 301 proven. 23 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 04:22:00,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:22:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 04:22:00,144 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:22:00,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017234194] [2022-11-03 04:22:00,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017234194] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 04:22:00,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:22:00,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-03 04:22:00,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420707566] [2022-11-03 04:22:00,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:22:00,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:22:00,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:22:00,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:22:00,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:22:00,145 INFO L87 Difference]: Start difference. First operand 7644 states and 9559 transitions. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states 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 04:22:00,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:22:00,375 INFO L93 Difference]: Finished difference Result 18386 states and 23550 transitions. [2022-11-03 04:22:00,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:22:00,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 511 [2022-11-03 04:22:00,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:22:00,384 INFO L225 Difference]: With dead ends: 18386 [2022-11-03 04:22:00,384 INFO L226 Difference]: Without dead ends: 15166 [2022-11-03 04:22:00,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1024 GetRequests, 1016 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:22:00,388 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 1428 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:22:00,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 1572 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:22:00,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15166 states. [2022-11-03 04:22:00,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15166 to 7708. [2022-11-03 04:22:00,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7708 states, 7707 states have (on average 1.2496431815232905) internal successors, (9631), 7707 states have internal predecessors, (9631), 0 states have call successors, (0), 0 states 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 04:22:00,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7708 states to 7708 states and 9631 transitions. [2022-11-03 04:22:00,514 INFO L78 Accepts]: Start accepts. Automaton has 7708 states and 9631 transitions. Word has length 511 [2022-11-03 04:22:00,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:22:00,514 INFO L495 AbstractCegarLoop]: Abstraction has 7708 states and 9631 transitions. [2022-11-03 04:22:00,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states 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 04:22:00,514 INFO L276 IsEmpty]: Start isEmpty. Operand 7708 states and 9631 transitions. [2022-11-03 04:22:00,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2022-11-03 04:22:00,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:22:00,521 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:22:00,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (109)] Ended with exit code 0 [2022-11-03 04:22:00,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:22:00,721 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:22:00,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:22:00,722 INFO L85 PathProgramCache]: Analyzing trace with hash 912321149, now seen corresponding path program 1 times [2022-11-03 04:22:00,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:22:00,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351739851] [2022-11-03 04:22:00,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:22:00,724 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:22:00,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:22:00,725 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:22:00,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (110)] Waiting until timeout for monitored process [2022-11-03 04:22:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:22:01,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 3538 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 04:22:01,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:22:02,508 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 299 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:22:02,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:22:02,989 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 299 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:22:02,989 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:22:02,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351739851] [2022-11-03 04:22:02,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351739851] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:22:02,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1304729664] [2022-11-03 04:22:02,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:22:02,989 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:22:02,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:22:02,990 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:22:02,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (111)] Waiting until timeout for monitored process [2022-11-03 04:22:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:22:04,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 3538 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:22:04,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:22:04,854 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 04:22:04,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:22:04,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1304729664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:22:04,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:22:04,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 12 [2022-11-03 04:22:04,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018613846] [2022-11-03 04:22:04,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:22:04,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:22:04,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:22:04,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:22:04,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-03 04:22:04,856 INFO L87 Difference]: Start difference. First operand 7708 states and 9631 transitions. Second operand has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states 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 04:22:05,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:22:05,088 INFO L93 Difference]: Finished difference Result 16074 states and 20642 transitions. [2022-11-03 04:22:05,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:22:05,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 511 [2022-11-03 04:22:05,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:22:05,096 INFO L225 Difference]: With dead ends: 16074 [2022-11-03 04:22:05,097 INFO L226 Difference]: Without dead ends: 12790 [2022-11-03 04:22:05,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1536 GetRequests, 1523 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 04:22:05,099 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1080 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:22:05,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1412 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:22:05,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12790 states. [2022-11-03 04:22:05,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12790 to 7772. [2022-11-03 04:22:05,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7772 states, 7771 states have (on average 1.2501608544588856) internal successors, (9715), 7771 states have internal predecessors, (9715), 0 states have call successors, (0), 0 states 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 04:22:05,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7772 states to 7772 states and 9715 transitions. [2022-11-03 04:22:05,211 INFO L78 Accepts]: Start accepts. Automaton has 7772 states and 9715 transitions. Word has length 511 [2022-11-03 04:22:05,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:22:05,211 INFO L495 AbstractCegarLoop]: Abstraction has 7772 states and 9715 transitions. [2022-11-03 04:22:05,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states 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 04:22:05,212 INFO L276 IsEmpty]: Start isEmpty. Operand 7772 states and 9715 transitions. [2022-11-03 04:22:05,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2022-11-03 04:22:05,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:22:05,218 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:22:05,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (110)] Ended with exit code 0 [2022-11-03 04:22:05,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (111)] Ended with exit code 0 [2022-11-03 04:22:05,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,111 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:22:05,618 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:22:05,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:22:05,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1368800769, now seen corresponding path program 1 times [2022-11-03 04:22:05,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:22:05,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281692242] [2022-11-03 04:22:05,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:22:05,621 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:22:05,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:22:05,622 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:22:05,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (112)] Waiting until timeout for monitored process [2022-11-03 04:22:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:22:06,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 3538 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:22:06,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:22:07,262 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 297 proven. 27 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 04:22:07,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:22:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 04:22:07,327 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:22:07,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281692242] [2022-11-03 04:22:07,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281692242] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 04:22:07,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:22:07,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-03 04:22:07,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998879338] [2022-11-03 04:22:07,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:22:07,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:22:07,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:22:07,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:22:07,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:22:07,329 INFO L87 Difference]: Start difference. First operand 7772 states and 9715 transitions. Second operand has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states 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 04:22:07,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:22:07,607 INFO L93 Difference]: Finished difference Result 21926 states and 28050 transitions. [2022-11-03 04:22:07,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:22:07,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 511 [2022-11-03 04:22:07,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:22:07,616 INFO L225 Difference]: With dead ends: 21926 [2022-11-03 04:22:07,616 INFO L226 Difference]: Without dead ends: 18578 [2022-11-03 04:22:07,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1024 GetRequests, 1014 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-03 04:22:07,619 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 1167 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:22:07,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 1708 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:22:07,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18578 states. [2022-11-03 04:22:07,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18578 to 8140. [2022-11-03 04:22:07,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8140 states, 8139 states have (on average 1.246221894581644) internal successors, (10143), 8139 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states 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 04:22:07,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8140 states to 8140 states and 10143 transitions. [2022-11-03 04:22:07,757 INFO L78 Accepts]: Start accepts. Automaton has 8140 states and 10143 transitions. Word has length 511 [2022-11-03 04:22:07,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:22:07,757 INFO L495 AbstractCegarLoop]: Abstraction has 8140 states and 10143 transitions. [2022-11-03 04:22:07,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states 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 04:22:07,757 INFO L276 IsEmpty]: Start isEmpty. Operand 8140 states and 10143 transitions. [2022-11-03 04:22:07,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2022-11-03 04:22:07,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:22:07,764 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:22:07,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (112)] Forceful destruction successful, exit code 0 [2022-11-03 04:22:07,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:22:07,969 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:22:07,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:22:07,969 INFO L85 PathProgramCache]: Analyzing trace with hash 711782909, now seen corresponding path program 1 times [2022-11-03 04:22:07,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:22:07,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079670271] [2022-11-03 04:22:07,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:22:07,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:22:07,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:22:07,972 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:22:07,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (113)] Waiting until timeout for monitored process [2022-11-03 04:22:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:22:09,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 3538 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:22:09,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:22:09,480 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 295 proven. 29 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 04:22:09,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:22:09,532 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 04:22:09,532 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:22:09,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079670271] [2022-11-03 04:22:09,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079670271] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 04:22:09,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:22:09,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-03 04:22:09,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268847846] [2022-11-03 04:22:09,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:22:09,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:22:09,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:22:09,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:22:09,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:22:09,534 INFO L87 Difference]: Start difference. First operand 8140 states and 10143 transitions. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states 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 04:22:09,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:22:09,767 INFO L93 Difference]: Finished difference Result 18510 states and 23538 transitions. [2022-11-03 04:22:09,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:22:09,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 511 [2022-11-03 04:22:09,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:22:09,775 INFO L225 Difference]: With dead ends: 18510 [2022-11-03 04:22:09,776 INFO L226 Difference]: Without dead ends: 14794 [2022-11-03 04:22:09,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1024 GetRequests, 1016 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:22:09,779 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 1424 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:22:09,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1424 Valid, 1576 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:22:09,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14794 states. [2022-11-03 04:22:09,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14794 to 8196. [2022-11-03 04:22:09,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8196 states, 8195 states have (on average 1.2460036607687615) internal successors, (10211), 8195 states have internal predecessors, (10211), 0 states have call successors, (0), 0 states 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 04:22:09,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8196 states to 8196 states and 10211 transitions. [2022-11-03 04:22:09,902 INFO L78 Accepts]: Start accepts. Automaton has 8196 states and 10211 transitions. Word has length 511 [2022-11-03 04:22:09,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:22:09,902 INFO L495 AbstractCegarLoop]: Abstraction has 8196 states and 10211 transitions. [2022-11-03 04:22:09,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states 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 04:22:09,902 INFO L276 IsEmpty]: Start isEmpty. Operand 8196 states and 10211 transitions. [2022-11-03 04:22:09,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2022-11-03 04:22:09,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:22:09,908 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:22:09,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (113)] Ended with exit code 0 [2022-11-03 04:22:10,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:22:10,109 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:22:10,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:22:10,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1073620353, now seen corresponding path program 1 times [2022-11-03 04:22:10,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:22:10,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208519363] [2022-11-03 04:22:10,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:22:10,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:22:10,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:22:10,112 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:22:10,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28256fe9-bef2-42fb-b2d5-aeb22c03745f/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (114)] Waiting until timeout for monitored process [2022-11-03 04:22:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:22:11,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 3538 conjuncts, 232 conjunts are in the unsatisfiable core [2022-11-03 04:22:11,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:23:35,239 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 289 proven. 123 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:23:35,239 INFO L328 TraceCheckSpWp]: Computing backward predicates...