./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_FIFOs.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/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_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_FIFOs.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/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_c4b9bca5-c2e1-4277-9908-9de1a218cfea/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 427b80ce447108f5ac86ee5271838c7249c36d7be5b2b61d54a48e34647a6826 --- 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 01:52:57,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:52:57,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:52:57,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:52:57,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:52:57,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:52:57,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:52:57,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:52:57,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:52:57,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:52:57,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:52:57,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:52:57,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:52:57,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:52:57,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:52:57,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:52:57,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:52:57,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:52:57,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:52:57,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:52:57,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:52:57,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:52:57,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:52:57,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:52:57,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:52:57,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:52:57,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:52:57,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:52:57,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:52:57,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:52:57,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:52:57,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:52:57,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:52:57,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:52:57,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:52:57,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:52:57,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:52:57,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:52:57,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:52:57,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:52:57,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:52:57,405 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:52:57,429 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:52:57,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:52:57,430 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:52:57,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:52:57,430 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:52:57,431 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:52:57,431 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:52:57,431 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:52:57,431 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:52:57,431 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:52:57,432 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:52:57,432 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:52:57,432 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:52:57,432 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:52:57,432 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:52:57,432 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:52:57,433 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:52:57,433 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:52:57,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:52:57,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:52:57,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:52:57,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:52:57,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:52:57,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:52:57,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:52:57,435 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:52:57,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:52:57,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:52:57,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:52:57,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:52:57,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:52:57,436 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:52:57,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:52:57,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:52:57,437 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:52:57,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:52:57,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:52:57,437 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:52:57,437 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_c4b9bca5-c2e1-4277-9908-9de1a218cfea/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 427b80ce447108f5ac86ee5271838c7249c36d7be5b2b61d54a48e34647a6826 [2022-11-03 01:52:57,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:52:57,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:52:57,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:52:57,769 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:52:57,770 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:52:57,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_FIFOs.c [2022-11-03 01:52:57,848 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/data/57987bd35/24909cb78efb4fe5a8adbf7a8fb160a0/FLAGdbc7d3068 [2022-11-03 01:52:58,559 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:52:58,559 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_FIFOs.c [2022-11-03 01:52:58,602 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/data/57987bd35/24909cb78efb4fe5a8adbf7a8fb160a0/FLAGdbc7d3068 [2022-11-03 01:52:58,862 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/data/57987bd35/24909cb78efb4fe5a8adbf7a8fb160a0 [2022-11-03 01:52:58,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:52:58,871 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:52:58,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:52:58,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:52:58,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:52:58,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:52:58" (1/1) ... [2022-11-03 01:52:58,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@305e519d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:58, skipping insertion in model container [2022-11-03 01:52:58,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:52:58" (1/1) ... [2022-11-03 01:52:58,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:52:58,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:52:59,191 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_c4b9bca5-c2e1-4277-9908-9de1a218cfea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_FIFOs.c[1107,1120] [2022-11-03 01:52:59,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:52:59,551 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:52:59,562 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_c4b9bca5-c2e1-4277-9908-9de1a218cfea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_FIFOs.c[1107,1120] [2022-11-03 01:52:59,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:52:59,673 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:52:59,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:59 WrapperNode [2022-11-03 01:52:59,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:52:59,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:52:59,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:52:59,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:52:59,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:59" (1/1) ... [2022-11-03 01:52:59,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:59" (1/1) ... [2022-11-03 01:52:59,961 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2222 [2022-11-03 01:52:59,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:52:59,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:52:59,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:52:59,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:52:59,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:59" (1/1) ... [2022-11-03 01:52:59,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:59" (1/1) ... [2022-11-03 01:53:00,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:59" (1/1) ... [2022-11-03 01:53:00,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:59" (1/1) ... [2022-11-03 01:53:00,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:59" (1/1) ... [2022-11-03 01:53:00,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:59" (1/1) ... [2022-11-03 01:53:00,166 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:59" (1/1) ... [2022-11-03 01:53:00,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:59" (1/1) ... [2022-11-03 01:53:00,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:53:00,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:53:00,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:53:00,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:53:00,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:59" (1/1) ... [2022-11-03 01:53:00,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:53:00,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:53:00,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:53:00,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:53:00,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:53:00,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:53:00,837 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:53:00,852 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:53:03,402 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:53:13,670 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:53:13,670 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:53:13,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:53:13 BoogieIcfgContainer [2022-11-03 01:53:13,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:53:13,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:53:13,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:53:13,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:53:13,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:52:58" (1/3) ... [2022-11-03 01:53:13,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764425e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:53:13, skipping insertion in model container [2022-11-03 01:53:13,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:59" (2/3) ... [2022-11-03 01:53:13,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764425e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:53:13, skipping insertion in model container [2022-11-03 01:53:13,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:53:13" (3/3) ... [2022-11-03 01:53:13,682 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_FIFOs.c [2022-11-03 01:53:13,702 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:53:13,702 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:53:13,748 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:53:13,754 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;@ebbee5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:53:13,755 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:53:13,759 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 01:53:13,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 01:53:13,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:13,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 01:53:13,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:13,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:13,772 INFO L85 PathProgramCache]: Analyzing trace with hash 29339741, now seen corresponding path program 1 times [2022-11-03 01:53:13,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:13,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570029721] [2022-11-03 01:53:13,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:13,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:53:18,746 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 01:53:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:53:20,778 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 01:53:20,780 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 01:53:20,781 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 01:53:20,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:53:20,787 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 01:53:20,791 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 01:53:20,848 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 01:53:20,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:53:20 BoogieIcfgContainer [2022-11-03 01:53:20,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 01:53:20,884 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 01:53:20,885 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 01:53:20,885 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 01:53:20,886 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:53:13" (3/4) ... [2022-11-03 01:53:20,890 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 01:53:20,890 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 01:53:20,893 INFO L158 Benchmark]: Toolchain (without parser) took 22019.87ms. Allocated memory was 117.4MB in the beginning and 3.2GB in the end (delta: 3.1GB). Free memory was 77.3MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 680.9MB. Max. memory is 16.1GB. [2022-11-03 01:53:20,893 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 117.4MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:53:20,894 INFO L158 Benchmark]: CACSL2BoogieTranslator took 840.56ms. Allocated memory is still 117.4MB. Free memory was 77.1MB in the beginning and 83.0MB in the end (delta: -6.0MB). Peak memory consumption was 45.0MB. Max. memory is 16.1GB. [2022-11-03 01:53:20,896 INFO L158 Benchmark]: Boogie Procedure Inliner took 242.65ms. Allocated memory is still 117.4MB. Free memory was 83.0MB in the beginning and 48.2MB in the end (delta: 34.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-03 01:53:20,901 INFO L158 Benchmark]: Boogie Preprocessor took 306.68ms. Allocated memory was 117.4MB in the beginning and 201.3MB in the end (delta: 83.9MB). Free memory was 48.2MB in the beginning and 142.9MB in the end (delta: -94.7MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2022-11-03 01:53:20,902 INFO L158 Benchmark]: RCFGBuilder took 13404.25ms. Allocated memory was 201.3MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 142.9MB in the beginning and 1.0GB in the end (delta: -894.3MB). Peak memory consumption was 803.3MB. Max. memory is 16.1GB. [2022-11-03 01:53:20,903 INFO L158 Benchmark]: TraceAbstraction took 7206.34ms. Allocated memory was 1.6GB in the beginning and 3.2GB in the end (delta: 1.6GB). Free memory was 1.0GB in the beginning and 2.5GB in the end (delta: -1.4GB). Peak memory consumption was 162.5MB. Max. memory is 16.1GB. [2022-11-03 01:53:20,904 INFO L158 Benchmark]: Witness Printer took 5.94ms. Allocated memory is still 3.2GB. Free memory was 2.5GB in the beginning and 2.5GB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:53:20,912 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 117.4MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 840.56ms. Allocated memory is still 117.4MB. Free memory was 77.1MB in the beginning and 83.0MB in the end (delta: -6.0MB). Peak memory consumption was 45.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 242.65ms. Allocated memory is still 117.4MB. Free memory was 83.0MB in the beginning and 48.2MB in the end (delta: 34.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 306.68ms. Allocated memory was 117.4MB in the beginning and 201.3MB in the end (delta: 83.9MB). Free memory was 48.2MB in the beginning and 142.9MB in the end (delta: -94.7MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. * RCFGBuilder took 13404.25ms. Allocated memory was 201.3MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 142.9MB in the beginning and 1.0GB in the end (delta: -894.3MB). Peak memory consumption was 803.3MB. Max. memory is 16.1GB. * TraceAbstraction took 7206.34ms. Allocated memory was 1.6GB in the beginning and 3.2GB in the end (delta: 1.6GB). Free memory was 1.0GB in the beginning and 2.5GB in the end (delta: -1.4GB). Peak memory consumption was 162.5MB. Max. memory is 16.1GB. * Witness Printer took 5.94ms. Allocated memory is still 3.2GB. Free memory was 2.5GB in the beginning and 2.5GB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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 225, overapproximation of bitwiseComplement at line 203, overapproximation of bitwiseAnd at line 194. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 4); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (4 - 1); [L31] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 32); [L32] const SORT_10 msb_SORT_10 = (SORT_10)1 << (32 - 1); [L34] const SORT_67 mask_SORT_67 = (SORT_67)-1 >> (sizeof(SORT_67) * 8 - 2); [L35] const SORT_67 msb_SORT_67 = (SORT_67)1 << (2 - 1); [L37] const SORT_69 mask_SORT_69 = (SORT_69)-1 >> (sizeof(SORT_69) * 8 - 3); [L38] const SORT_69 msb_SORT_69 = (SORT_69)1 << (3 - 1); [L40] const SORT_3 var_7 = 0; [L41] const SORT_10 var_12 = 15; [L42] const SORT_1 var_19 = 1; [L43] const SORT_3 var_33 = 1; [L44] const SORT_3 var_40 = 3; [L45] const SORT_3 var_43 = 2; [L46] const SORT_3 var_51 = 5; [L47] const SORT_3 var_58 = 7; [L48] const SORT_3 var_61 = 6; [L49] const SORT_3 var_65 = 4; [L50] const SORT_3 var_77 = 9; [L51] const SORT_3 var_84 = 11; [L52] const SORT_3 var_87 = 10; [L53] const SORT_3 var_95 = 13; [L54] const SORT_3 var_102 = 15; [L55] const SORT_3 var_105 = 14; [L56] const SORT_3 var_109 = 12; [L57] const SORT_3 var_115 = 8; [L58] const SORT_10 var_191 = 1; [L59] const SORT_10 var_195 = 0; [L60] const SORT_1 var_228 = 0; [L62] SORT_1 input_2; [L63] SORT_3 input_4; [L64] SORT_1 input_5; [L65] SORT_1 input_6; [L66] SORT_10 input_188; [L67] SORT_3 input_268; [L68] SORT_3 input_271; [L70] SORT_3 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L71] SORT_3 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L72] SORT_3 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L73] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L74] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] SORT_3 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L76] SORT_3 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L77] SORT_3 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L78] SORT_3 state_38 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L79] SORT_3 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L80] SORT_3 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L81] SORT_3 state_54 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L82] SORT_3 state_56 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L83] SORT_3 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L84] SORT_3 state_75 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L85] SORT_3 state_80 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L86] SORT_3 state_82 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L87] SORT_3 state_91 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L88] SORT_3 state_93 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L89] SORT_3 state_98 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L90] SORT_3 state_100 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L91] SORT_3 state_122 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L92] SORT_3 state_124 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L93] SORT_3 state_128 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L94] SORT_3 state_130 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L95] SORT_3 state_135 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L96] SORT_3 state_137 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L97] SORT_3 state_140 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L98] SORT_3 state_142 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L99] SORT_3 state_148 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L100] SORT_3 state_150 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L101] SORT_3 state_153 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L102] SORT_3 state_155 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L103] SORT_3 state_159 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L104] SORT_3 state_161 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L105] SORT_3 state_164 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L106] SORT_3 state_166 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L108] SORT_3 init_9_arg_1 = var_7; [L109] state_8 = init_9_arg_1 [L110] SORT_3 init_15_arg_1 = var_7; [L111] state_14 = init_15_arg_1 [L112] SORT_3 init_17_arg_1 = var_7; [L113] state_16 = init_17_arg_1 [L114] SORT_1 init_21_arg_1 = var_19; [L115] state_20 = init_21_arg_1 [L116] SORT_1 init_26_arg_1 = var_19; [L117] state_25 = init_26_arg_1 [L118] SORT_3 init_30_arg_1 = var_7; [L119] state_29 = init_30_arg_1 [L120] SORT_3 init_32_arg_1 = var_7; [L121] state_31 = init_32_arg_1 [L122] SORT_3 init_37_arg_1 = var_7; [L123] state_36 = init_37_arg_1 [L124] SORT_3 init_39_arg_1 = var_7; [L125] state_38 = init_39_arg_1 [L126] SORT_3 init_48_arg_1 = var_7; [L127] state_47 = init_48_arg_1 [L128] SORT_3 init_50_arg_1 = var_7; [L129] state_49 = init_50_arg_1 [L130] SORT_3 init_55_arg_1 = var_7; [L131] state_54 = init_55_arg_1 [L132] SORT_3 init_57_arg_1 = var_7; [L133] state_56 = init_57_arg_1 [L134] SORT_3 init_74_arg_1 = var_7; [L135] state_73 = init_74_arg_1 [L136] SORT_3 init_76_arg_1 = var_7; [L137] state_75 = init_76_arg_1 [L138] SORT_3 init_81_arg_1 = var_7; [L139] state_80 = init_81_arg_1 [L140] SORT_3 init_83_arg_1 = var_7; [L141] state_82 = init_83_arg_1 [L142] SORT_3 init_92_arg_1 = var_7; [L143] state_91 = init_92_arg_1 [L144] SORT_3 init_94_arg_1 = var_7; [L145] state_93 = init_94_arg_1 [L146] SORT_3 init_99_arg_1 = var_7; [L147] state_98 = init_99_arg_1 [L148] SORT_3 init_101_arg_1 = var_7; [L149] state_100 = init_101_arg_1 [L150] SORT_3 init_123_arg_1 = var_7; [L151] state_122 = init_123_arg_1 [L152] SORT_3 init_125_arg_1 = var_7; [L153] state_124 = init_125_arg_1 [L154] SORT_3 init_129_arg_1 = var_7; [L155] state_128 = init_129_arg_1 [L156] SORT_3 init_131_arg_1 = var_7; [L157] state_130 = init_131_arg_1 [L158] SORT_3 init_136_arg_1 = var_7; [L159] state_135 = init_136_arg_1 [L160] SORT_3 init_138_arg_1 = var_7; [L161] state_137 = init_138_arg_1 [L162] SORT_3 init_141_arg_1 = var_7; [L163] state_140 = init_141_arg_1 [L164] SORT_3 init_143_arg_1 = var_7; [L165] state_142 = init_143_arg_1 [L166] SORT_3 init_149_arg_1 = var_7; [L167] state_148 = init_149_arg_1 [L168] SORT_3 init_151_arg_1 = var_7; [L169] state_150 = init_151_arg_1 [L170] SORT_3 init_154_arg_1 = var_7; [L171] state_153 = init_154_arg_1 [L172] SORT_3 init_156_arg_1 = var_7; [L173] state_155 = init_156_arg_1 [L174] SORT_3 init_160_arg_1 = var_7; [L175] state_159 = init_160_arg_1 [L176] SORT_3 init_162_arg_1 = var_7; [L177] state_161 = init_162_arg_1 [L178] SORT_3 init_165_arg_1 = var_7; [L179] state_164 = init_165_arg_1 [L180] SORT_3 init_167_arg_1 = var_7; [L181] state_166 = init_167_arg_1 VAL [init_101_arg_1=0, init_123_arg_1=0, init_125_arg_1=0, init_129_arg_1=0, init_131_arg_1=0, init_136_arg_1=0, init_138_arg_1=0, init_141_arg_1=0, init_143_arg_1=0, init_149_arg_1=0, init_151_arg_1=0, init_154_arg_1=0, init_156_arg_1=0, init_15_arg_1=0, init_160_arg_1=0, init_162_arg_1=0, init_165_arg_1=0, init_167_arg_1=0, init_17_arg_1=0, init_21_arg_1=1, init_26_arg_1=1, init_30_arg_1=0, init_32_arg_1=0, init_37_arg_1=0, init_39_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_55_arg_1=0, init_57_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_81_arg_1=0, init_83_arg_1=0, init_92_arg_1=0, init_94_arg_1=0, init_99_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_10=4294967295, mask_SORT_3=15, mask_SORT_67=3, mask_SORT_69=7, msb_SORT_1=1, msb_SORT_10=2147483648, msb_SORT_3=8, msb_SORT_67=2, msb_SORT_69=4, state_100=0, state_122=0, state_124=0, state_128=0, state_130=0, state_135=0, state_137=0, state_14=0, state_140=0, state_142=0, state_148=0, state_150=0, state_153=0, state_155=0, state_159=0, state_16=0, state_161=0, state_164=0, state_166=0, state_20=1, state_25=1, state_29=0, state_31=0, state_36=0, state_38=0, state_47=0, state_49=0, state_54=0, state_56=0, state_73=0, state_75=0, state_8=0, state_80=0, state_82=0, state_91=0, state_93=0, state_98=0, var_102=15, var_105=14, var_109=12, var_115=8, var_12=15, var_19=1, var_191=1, var_195=0, var_228=0, var_33=1, var_40=3, var_43=2, var_51=5, var_58=7, var_61=6, var_65=4, var_7=0, var_77=9, var_84=11, var_87=10, var_95=13] [L184] input_2 = __VERIFIER_nondet_uchar() [L185] input_4 = __VERIFIER_nondet_uchar() [L186] input_5 = __VERIFIER_nondet_uchar() [L187] input_6 = __VERIFIER_nondet_uchar() [L188] input_188 = __VERIFIER_nondet_uint() [L189] input_268 = __VERIFIER_nondet_uchar() [L190] input_271 = __VERIFIER_nondet_uchar() [L193] SORT_3 var_11_arg_0 = state_8; [L194] var_11_arg_0 = var_11_arg_0 & mask_SORT_3 [L195] SORT_10 var_11 = var_11_arg_0; [L196] SORT_10 var_13_arg_0 = var_11; [L197] SORT_10 var_13_arg_1 = var_12; [L198] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L199] SORT_3 var_18_arg_0 = state_14; [L200] SORT_3 var_18_arg_1 = state_16; [L201] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L202] SORT_1 var_22_arg_0 = state_20; [L203] SORT_1 var_22 = ~var_22_arg_0; [L204] SORT_1 var_23_arg_0 = var_18; [L205] SORT_1 var_23_arg_1 = var_22; [L206] SORT_1 var_23 = var_23_arg_0 & var_23_arg_1; [L207] var_23 = var_23 & mask_SORT_1 [L208] SORT_1 var_24_arg_0 = var_13; [L209] SORT_1 var_24_arg_1 = var_23; [L210] SORT_1 var_24 = var_24_arg_0 == var_24_arg_1; [L211] SORT_1 var_27_arg_0 = state_25; [L212] SORT_1 var_27_arg_1 = state_20; [L213] SORT_1 var_27 = var_27_arg_0 == var_27_arg_1; [L214] SORT_1 var_28_arg_0 = var_24; [L215] SORT_1 var_28_arg_1 = var_27; [L216] SORT_1 var_28 = var_28_arg_0 & var_28_arg_1; [L217] SORT_3 var_106_arg_0 = state_8; [L218] SORT_3 var_106_arg_1 = var_105; [L219] SORT_1 var_106 = var_106_arg_0 == var_106_arg_1; [L220] SORT_3 var_103_arg_0 = state_8; [L221] SORT_3 var_103_arg_1 = var_102; [L222] SORT_1 var_103 = var_103_arg_0 == var_103_arg_1; [L223] SORT_1 var_107_arg_0 = var_106; [L224] SORT_1 var_107_arg_1 = var_103; [L225] SORT_1 var_107 = var_107_arg_0 | var_107_arg_1; [L226] var_107 = var_107 & mask_SORT_1 [L227] SORT_3 var_96_arg_0 = state_8; [L228] SORT_3 var_96_arg_1 = var_95; [L229] SORT_1 var_96 = var_96_arg_0 == var_96_arg_1; [L230] SORT_3 var_110_arg_0 = state_8; [L231] SORT_3 var_110_arg_1 = var_109; [L232] SORT_1 var_110 = var_110_arg_0 == var_110_arg_1; [L233] SORT_1 var_111_arg_0 = var_96; [L234] SORT_1 var_111_arg_1 = var_110; [L235] SORT_67 var_111 = ((SORT_67)var_111_arg_0 << 1) | var_111_arg_1; [L236] var_111 = var_111 & mask_SORT_67 [L237] SORT_1 var_112_arg_0 = var_107; [L238] SORT_67 var_112_arg_1 = var_111; [L239] SORT_69 var_112 = ((SORT_69)var_112_arg_0 << 2) | var_112_arg_1; [L240] var_112 = var_112 & mask_SORT_69 [L241] SORT_69 var_113_arg_0 = var_112; [L242] SORT_1 var_113 = var_113_arg_0 != 0; [L243] SORT_3 var_88_arg_0 = state_8; [L244] SORT_3 var_88_arg_1 = var_87; [L245] SORT_1 var_88 = var_88_arg_0 == var_88_arg_1; [L246] SORT_3 var_85_arg_0 = state_8; [L247] SORT_3 var_85_arg_1 = var_84; [L248] SORT_1 var_85 = var_85_arg_0 == var_85_arg_1; [L249] SORT_1 var_89_arg_0 = var_88; [L250] SORT_1 var_89_arg_1 = var_85; [L251] SORT_1 var_89 = var_89_arg_0 | var_89_arg_1; [L252] var_89 = var_89 & mask_SORT_1 [L253] SORT_3 var_78_arg_0 = state_8; [L254] SORT_3 var_78_arg_1 = var_77; [L255] SORT_1 var_78 = var_78_arg_0 == var_78_arg_1; [L256] SORT_3 var_116_arg_0 = state_8; [L257] SORT_3 var_116_arg_1 = var_115; [L258] SORT_1 var_116 = var_116_arg_0 == var_116_arg_1; [L259] SORT_1 var_117_arg_0 = var_78; [L260] SORT_1 var_117_arg_1 = var_116; [L261] SORT_67 var_117 = ((SORT_67)var_117_arg_0 << 1) | var_117_arg_1; [L262] var_117 = var_117 & mask_SORT_67 [L263] SORT_1 var_118_arg_0 = var_89; [L264] SORT_67 var_118_arg_1 = var_117; [L265] SORT_69 var_118 = ((SORT_69)var_118_arg_0 << 2) | var_118_arg_1; [L266] var_118 = var_118 & mask_SORT_69 [L267] SORT_1 var_119_arg_0 = var_113; [L268] SORT_69 var_119_arg_1 = var_118; [L269] SORT_3 var_119 = ((SORT_3)var_119_arg_0 << 3) | var_119_arg_1; [L270] var_119 = var_119 & mask_SORT_3 [L271] SORT_3 var_120_arg_0 = var_119; [L272] SORT_1 var_120 = var_120_arg_0 != 0; [L273] SORT_1 var_104_arg_0 = var_103; [L274] SORT_3 var_104_arg_1 = state_100; [L275] SORT_3 var_104_arg_2 = state_98; [L276] EXPR var_104_arg_0 ? var_104_arg_1 : var_104_arg_2 [L276] SORT_3 var_104 = var_104_arg_0 ? var_104_arg_1 : var_104_arg_2; [L277] SORT_1 var_97_arg_0 = var_96; [L278] SORT_3 var_97_arg_1 = state_93; [L279] SORT_3 var_97_arg_2 = state_91; [L280] EXPR var_97_arg_0 ? var_97_arg_1 : var_97_arg_2 [L280] SORT_3 var_97 = var_97_arg_0 ? var_97_arg_1 : var_97_arg_2; [L281] SORT_1 var_108_arg_0 = var_107; [L282] SORT_3 var_108_arg_1 = var_104; [L283] SORT_3 var_108_arg_2 = var_97; [L284] EXPR var_108_arg_0 ? var_108_arg_1 : var_108_arg_2 [L284] SORT_3 var_108 = var_108_arg_0 ? var_108_arg_1 : var_108_arg_2; [L285] SORT_1 var_86_arg_0 = var_85; [L286] SORT_3 var_86_arg_1 = state_82; [L287] SORT_3 var_86_arg_2 = state_80; [L288] EXPR var_86_arg_0 ? var_86_arg_1 : var_86_arg_2 [L288] SORT_3 var_86 = var_86_arg_0 ? var_86_arg_1 : var_86_arg_2; [L289] SORT_1 var_79_arg_0 = var_78; [L290] SORT_3 var_79_arg_1 = state_75; [L291] SORT_3 var_79_arg_2 = state_73; [L292] EXPR var_79_arg_0 ? var_79_arg_1 : var_79_arg_2 [L292] SORT_3 var_79 = var_79_arg_0 ? var_79_arg_1 : var_79_arg_2; [L293] SORT_1 var_90_arg_0 = var_89; [L294] SORT_3 var_90_arg_1 = var_86; [L295] SORT_3 var_90_arg_2 = var_79; [L296] EXPR var_90_arg_0 ? var_90_arg_1 : var_90_arg_2 [L296] SORT_3 var_90 = var_90_arg_0 ? var_90_arg_1 : var_90_arg_2; [L297] SORT_1 var_114_arg_0 = var_113; [L298] SORT_3 var_114_arg_1 = var_108; [L299] SORT_3 var_114_arg_2 = var_90; [L300] EXPR var_114_arg_0 ? var_114_arg_1 : var_114_arg_2 [L300] SORT_3 var_114 = var_114_arg_0 ? var_114_arg_1 : var_114_arg_2; [L301] SORT_3 var_62_arg_0 = state_8; [L302] SORT_3 var_62_arg_1 = var_61; [L303] SORT_1 var_62 = var_62_arg_0 == var_62_arg_1; [L304] SORT_3 var_59_arg_0 = state_8; [L305] SORT_3 var_59_arg_1 = var_58; [L306] SORT_1 var_59 = var_59_arg_0 == var_59_arg_1; [L307] SORT_1 var_63_arg_0 = var_62; [L308] SORT_1 var_63_arg_1 = var_59; [L309] SORT_1 var_63 = var_63_arg_0 | var_63_arg_1; [L310] var_63 = var_63 & mask_SORT_1 [L311] SORT_3 var_52_arg_0 = state_8; [L312] SORT_3 var_52_arg_1 = var_51; [L313] SORT_1 var_52 = var_52_arg_0 == var_52_arg_1; [L314] SORT_3 var_66_arg_0 = state_8; [L315] SORT_3 var_66_arg_1 = var_65; [L316] SORT_1 var_66 = var_66_arg_0 == var_66_arg_1; [L317] SORT_1 var_68_arg_0 = var_52; [L318] SORT_1 var_68_arg_1 = var_66; [L319] SORT_67 var_68 = ((SORT_67)var_68_arg_0 << 1) | var_68_arg_1; [L320] var_68 = var_68 & mask_SORT_67 [L321] SORT_1 var_70_arg_0 = var_63; [L322] SORT_67 var_70_arg_1 = var_68; [L323] SORT_69 var_70 = ((SORT_69)var_70_arg_0 << 2) | var_70_arg_1; [L324] var_70 = var_70 & mask_SORT_69 [L325] SORT_69 var_71_arg_0 = var_70; [L326] SORT_1 var_71 = var_71_arg_0 != 0; [L327] SORT_1 var_60_arg_0 = var_59; [L328] SORT_3 var_60_arg_1 = state_56; [L329] SORT_3 var_60_arg_2 = state_54; [L330] EXPR var_60_arg_0 ? var_60_arg_1 : var_60_arg_2 [L330] SORT_3 var_60 = var_60_arg_0 ? var_60_arg_1 : var_60_arg_2; [L331] SORT_1 var_53_arg_0 = var_52; [L332] SORT_3 var_53_arg_1 = state_49; [L333] SORT_3 var_53_arg_2 = state_47; [L334] EXPR var_53_arg_0 ? var_53_arg_1 : var_53_arg_2 [L334] SORT_3 var_53 = var_53_arg_0 ? var_53_arg_1 : var_53_arg_2; [L335] SORT_1 var_64_arg_0 = var_63; [L336] SORT_3 var_64_arg_1 = var_60; [L337] SORT_3 var_64_arg_2 = var_53; [L338] EXPR var_64_arg_0 ? var_64_arg_1 : var_64_arg_2 [L338] SORT_3 var_64 = var_64_arg_0 ? var_64_arg_1 : var_64_arg_2; [L339] SORT_3 var_44_arg_0 = state_8; [L340] SORT_3 var_44_arg_1 = var_43; [L341] SORT_1 var_44 = var_44_arg_0 == var_44_arg_1; [L342] SORT_3 var_41_arg_0 = state_8; [L343] SORT_3 var_41_arg_1 = var_40; [L344] SORT_1 var_41 = var_41_arg_0 == var_41_arg_1; [L345] SORT_1 var_45_arg_0 = var_44; [L346] SORT_1 var_45_arg_1 = var_41; [L347] SORT_1 var_45 = var_45_arg_0 | var_45_arg_1; [L348] var_45 = var_45 & mask_SORT_1 [L349] SORT_1 var_42_arg_0 = var_41; [L350] SORT_3 var_42_arg_1 = state_38; [L351] SORT_3 var_42_arg_2 = state_36; [L352] EXPR var_42_arg_0 ? var_42_arg_1 : var_42_arg_2 [L352] SORT_3 var_42 = var_42_arg_0 ? var_42_arg_1 : var_42_arg_2; [L353] SORT_3 var_34_arg_0 = state_8; [L354] SORT_3 var_34_arg_1 = var_33; [L355] SORT_1 var_34 = var_34_arg_0 == var_34_arg_1; [L356] SORT_1 var_35_arg_0 = var_34; [L357] SORT_3 var_35_arg_1 = state_31; [L358] SORT_3 var_35_arg_2 = state_29; [L359] EXPR var_35_arg_0 ? var_35_arg_1 : var_35_arg_2 [L359] SORT_3 var_35 = var_35_arg_0 ? var_35_arg_1 : var_35_arg_2; [L360] SORT_1 var_46_arg_0 = var_45; [L361] SORT_3 var_46_arg_1 = var_42; [L362] SORT_3 var_46_arg_2 = var_35; [L363] EXPR var_46_arg_0 ? var_46_arg_1 : var_46_arg_2 [L363] SORT_3 var_46 = var_46_arg_0 ? var_46_arg_1 : var_46_arg_2; [L364] SORT_1 var_72_arg_0 = var_71; [L365] SORT_3 var_72_arg_1 = var_64; [L366] SORT_3 var_72_arg_2 = var_46; [L367] EXPR var_72_arg_0 ? var_72_arg_1 : var_72_arg_2 [L367] SORT_3 var_72 = var_72_arg_0 ? var_72_arg_1 : var_72_arg_2; [L368] SORT_1 var_121_arg_0 = var_120; [L369] SORT_3 var_121_arg_1 = var_114; [L370] SORT_3 var_121_arg_2 = var_72; [L371] EXPR var_121_arg_0 ? var_121_arg_1 : var_121_arg_2 [L371] SORT_3 var_121 = var_121_arg_0 ? var_121_arg_1 : var_121_arg_2; [L372] var_121 = var_121 & mask_SORT_3 [L373] SORT_3 var_171_arg_0 = state_14; [L374] SORT_1 var_171 = var_171_arg_0 >> 3; [L375] var_171 = var_171 & mask_SORT_1 [L376] SORT_3 var_146_arg_0 = state_14; [L377] SORT_1 var_146 = var_146_arg_0 >> 2; [L378] var_146 = var_146 & mask_SORT_1 [L379] SORT_3 var_133_arg_0 = state_14; [L380] SORT_1 var_133 = var_133_arg_0 >> 1; [L381] var_133 = var_133 & mask_SORT_1 [L382] SORT_3 var_126_arg_0 = state_14; [L383] SORT_1 var_126 = var_126_arg_0 >> 0; [L384] var_126 = var_126 & mask_SORT_1 [L385] SORT_1 var_168_arg_0 = var_126; [L386] SORT_3 var_168_arg_1 = state_166; [L387] SORT_3 var_168_arg_2 = state_164; [L388] EXPR var_168_arg_0 ? var_168_arg_1 : var_168_arg_2 [L388] SORT_3 var_168 = var_168_arg_0 ? var_168_arg_1 : var_168_arg_2; [L389] SORT_1 var_163_arg_0 = var_126; [L390] SORT_3 var_163_arg_1 = state_161; [L391] SORT_3 var_163_arg_2 = state_159; [L392] EXPR var_163_arg_0 ? var_163_arg_1 : var_163_arg_2 [L392] SORT_3 var_163 = var_163_arg_0 ? var_163_arg_1 : var_163_arg_2; [L393] SORT_1 var_169_arg_0 = var_133; [L394] SORT_3 var_169_arg_1 = var_168; [L395] SORT_3 var_169_arg_2 = var_163; [L396] EXPR var_169_arg_0 ? var_169_arg_1 : var_169_arg_2 [L396] SORT_3 var_169 = var_169_arg_0 ? var_169_arg_1 : var_169_arg_2; [L397] SORT_1 var_157_arg_0 = var_126; [L398] SORT_3 var_157_arg_1 = state_155; [L399] SORT_3 var_157_arg_2 = state_153; [L400] EXPR var_157_arg_0 ? var_157_arg_1 : var_157_arg_2 [L400] SORT_3 var_157 = var_157_arg_0 ? var_157_arg_1 : var_157_arg_2; [L401] SORT_1 var_152_arg_0 = var_126; [L402] SORT_3 var_152_arg_1 = state_150; [L403] SORT_3 var_152_arg_2 = state_148; [L404] EXPR var_152_arg_0 ? var_152_arg_1 : var_152_arg_2 [L404] SORT_3 var_152 = var_152_arg_0 ? var_152_arg_1 : var_152_arg_2; [L405] SORT_1 var_158_arg_0 = var_133; [L406] SORT_3 var_158_arg_1 = var_157; [L407] SORT_3 var_158_arg_2 = var_152; [L408] EXPR var_158_arg_0 ? var_158_arg_1 : var_158_arg_2 [L408] SORT_3 var_158 = var_158_arg_0 ? var_158_arg_1 : var_158_arg_2; [L409] SORT_1 var_170_arg_0 = var_146; [L410] SORT_3 var_170_arg_1 = var_169; [L411] SORT_3 var_170_arg_2 = var_158; [L412] EXPR var_170_arg_0 ? var_170_arg_1 : var_170_arg_2 [L412] SORT_3 var_170 = var_170_arg_0 ? var_170_arg_1 : var_170_arg_2; [L413] SORT_1 var_144_arg_0 = var_126; [L414] SORT_3 var_144_arg_1 = state_142; [L415] SORT_3 var_144_arg_2 = state_140; [L416] EXPR var_144_arg_0 ? var_144_arg_1 : var_144_arg_2 [L416] SORT_3 var_144 = var_144_arg_0 ? var_144_arg_1 : var_144_arg_2; [L417] SORT_1 var_139_arg_0 = var_126; [L418] SORT_3 var_139_arg_1 = state_137; [L419] SORT_3 var_139_arg_2 = state_135; [L420] EXPR var_139_arg_0 ? var_139_arg_1 : var_139_arg_2 [L420] SORT_3 var_139 = var_139_arg_0 ? var_139_arg_1 : var_139_arg_2; [L421] SORT_1 var_145_arg_0 = var_133; [L422] SORT_3 var_145_arg_1 = var_144; [L423] SORT_3 var_145_arg_2 = var_139; [L424] EXPR var_145_arg_0 ? var_145_arg_1 : var_145_arg_2 [L424] SORT_3 var_145 = var_145_arg_0 ? var_145_arg_1 : var_145_arg_2; [L425] SORT_1 var_132_arg_0 = var_126; [L426] SORT_3 var_132_arg_1 = state_130; [L427] SORT_3 var_132_arg_2 = state_128; [L428] EXPR var_132_arg_0 ? var_132_arg_1 : var_132_arg_2 [L428] SORT_3 var_132 = var_132_arg_0 ? var_132_arg_1 : var_132_arg_2; [L429] SORT_1 var_127_arg_0 = var_126; [L430] SORT_3 var_127_arg_1 = state_124; [L431] SORT_3 var_127_arg_2 = state_122; [L432] EXPR var_127_arg_0 ? var_127_arg_1 : var_127_arg_2 [L432] SORT_3 var_127 = var_127_arg_0 ? var_127_arg_1 : var_127_arg_2; [L433] SORT_1 var_134_arg_0 = var_133; [L434] SORT_3 var_134_arg_1 = var_132; [L435] SORT_3 var_134_arg_2 = var_127; [L436] EXPR var_134_arg_0 ? var_134_arg_1 : var_134_arg_2 [L436] SORT_3 var_134 = var_134_arg_0 ? var_134_arg_1 : var_134_arg_2; [L437] SORT_1 var_147_arg_0 = var_146; [L438] SORT_3 var_147_arg_1 = var_145; [L439] SORT_3 var_147_arg_2 = var_134; [L440] EXPR var_147_arg_0 ? var_147_arg_1 : var_147_arg_2 [L440] SORT_3 var_147 = var_147_arg_0 ? var_147_arg_1 : var_147_arg_2; [L441] SORT_1 var_172_arg_0 = var_171; [L442] SORT_3 var_172_arg_1 = var_170; [L443] SORT_3 var_172_arg_2 = var_147; [L444] EXPR var_172_arg_0 ? var_172_arg_1 : var_172_arg_2 [L444] SORT_3 var_172 = var_172_arg_0 ? var_172_arg_1 : var_172_arg_2; [L445] var_172 = var_172 & mask_SORT_3 [L446] SORT_3 var_173_arg_0 = var_121; [L447] SORT_3 var_173_arg_1 = var_172; [L448] SORT_1 var_173 = var_173_arg_0 == var_173_arg_1; [L449] SORT_1 var_174_arg_0 = state_25; [L450] SORT_1 var_174_arg_1 = var_173; [L451] SORT_1 var_174 = var_174_arg_0 | var_174_arg_1; [L452] SORT_1 var_175_arg_0 = var_28; [L453] SORT_1 var_175_arg_1 = var_174; [L454] SORT_1 var_175 = var_175_arg_0 & var_175_arg_1; [L455] var_175 = var_175 & mask_SORT_1 [L456] SORT_1 var_176_arg_0 = var_175; [L457] SORT_1 var_176_arg_1 = var_19; [L458] SORT_1 var_176 = var_176_arg_0 == var_176_arg_1; [L459] SORT_1 var_179_arg_0 = var_176; [L460] SORT_1 var_179 = ~var_179_arg_0; [L461] SORT_1 var_180_arg_0 = var_19; [L462] SORT_1 var_180_arg_1 = var_179; [L463] SORT_1 var_180 = var_180_arg_0 & var_180_arg_1; [L464] var_180 = var_180 & mask_SORT_1 [L465] SORT_1 bad_181_arg_0 = var_180; [L466] CALL __VERIFIER_assert(!(bad_181_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: 7.1s, 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: 0.0s SsaConstructionTime, 4.8s 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 01:53:20,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/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_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_FIFOs.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/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_c4b9bca5-c2e1-4277-9908-9de1a218cfea/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 427b80ce447108f5ac86ee5271838c7249c36d7be5b2b61d54a48e34647a6826 --- 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 01:53:23,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:53:23,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:53:23,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:53:23,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:53:23,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:53:23,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:53:23,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:53:23,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:53:23,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:53:23,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:53:23,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:53:23,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:53:23,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:53:23,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:53:23,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:53:23,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:53:23,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:53:23,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:53:23,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:53:23,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:53:23,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:53:23,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:53:23,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:53:23,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:53:23,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:53:23,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:53:23,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:53:23,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:53:23,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:53:23,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:53:23,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:53:23,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:53:23,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:53:23,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:53:23,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:53:23,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:53:23,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:53:23,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:53:23,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:53:23,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:53:23,486 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 01:53:23,533 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:53:23,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:53:23,534 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:53:23,534 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:53:23,535 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:53:23,535 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:53:23,535 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:53:23,535 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:53:23,535 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:53:23,536 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:53:23,536 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:53:23,536 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:53:23,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:53:23,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:53:23,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:53:23,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:53:23,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:53:23,538 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 01:53:23,538 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 01:53:23,538 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 01:53:23,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:53:23,543 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:53:23,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:53:23,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:53:23,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 01:53:23,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:53:23,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:53:23,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:53:23,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:53:23,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:53:23,545 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 01:53:23,546 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 01:53:23,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:53:23,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:53:23,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 01:53:23,546 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_c4b9bca5-c2e1-4277-9908-9de1a218cfea/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 427b80ce447108f5ac86ee5271838c7249c36d7be5b2b61d54a48e34647a6826 [2022-11-03 01:53:23,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:53:23,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:53:23,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:53:23,934 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:53:23,937 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:53:23,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_FIFOs.c [2022-11-03 01:53:24,011 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/data/2221cce07/721152a8486a4741bce9cc062a24f3fe/FLAG8f557e2d7 [2022-11-03 01:53:24,802 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:53:24,802 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_FIFOs.c [2022-11-03 01:53:24,824 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/data/2221cce07/721152a8486a4741bce9cc062a24f3fe/FLAG8f557e2d7 [2022-11-03 01:53:24,951 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/data/2221cce07/721152a8486a4741bce9cc062a24f3fe [2022-11-03 01:53:24,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:53:24,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:53:24,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:53:24,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:53:24,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:53:24,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:53:24" (1/1) ... [2022-11-03 01:53:24,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b3ceb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:53:24, skipping insertion in model container [2022-11-03 01:53:24,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:53:24" (1/1) ... [2022-11-03 01:53:24,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:53:25,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:53:25,184 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_c4b9bca5-c2e1-4277-9908-9de1a218cfea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_FIFOs.c[1107,1120] [2022-11-03 01:53:25,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:53:25,544 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:53:25,563 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_c4b9bca5-c2e1-4277-9908-9de1a218cfea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_FIFOs.c[1107,1120] [2022-11-03 01:53:25,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:53:25,806 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:53:25,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:53:25 WrapperNode [2022-11-03 01:53:25,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:53:25,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:53:25,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:53:25,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:53:25,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:53:25" (1/1) ... [2022-11-03 01:53:25,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:53:25" (1/1) ... [2022-11-03 01:53:25,978 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2222 [2022-11-03 01:53:25,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:53:25,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:53:25,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:53:25,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:53:25,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:53:25" (1/1) ... [2022-11-03 01:53:25,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:53:25" (1/1) ... [2022-11-03 01:53:26,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:53:25" (1/1) ... [2022-11-03 01:53:26,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:53:25" (1/1) ... [2022-11-03 01:53:26,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:53:25" (1/1) ... [2022-11-03 01:53:26,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:53:25" (1/1) ... [2022-11-03 01:53:26,082 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:53:25" (1/1) ... [2022-11-03 01:53:26,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:53:25" (1/1) ... [2022-11-03 01:53:26,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:53:26,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:53:26,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:53:26,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:53:26,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:53:25" (1/1) ... [2022-11-03 01:53:26,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:53:26,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:53:26,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:53:26,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:53:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:53:26,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:53:26,824 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:53:26,826 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:53:28,313 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:53:28,323 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:53:28,324 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:53:28,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:53:28 BoogieIcfgContainer [2022-11-03 01:53:28,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:53:28,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:53:28,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:53:28,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:53:28,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:53:24" (1/3) ... [2022-11-03 01:53:28,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3efc4e92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:53:28, skipping insertion in model container [2022-11-03 01:53:28,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:53:25" (2/3) ... [2022-11-03 01:53:28,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3efc4e92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:53:28, skipping insertion in model container [2022-11-03 01:53:28,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:53:28" (3/3) ... [2022-11-03 01:53:28,335 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_FIFOs.c [2022-11-03 01:53:28,353 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:53:28,353 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:53:28,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:53:28,414 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;@42943019, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:53:28,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:53:28,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 263 states, 261 states have (on average 1.4980842911877394) internal successors, (391), 262 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:28,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:28,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:28,428 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] [2022-11-03 01:53:28,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:28,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:28,434 INFO L85 PathProgramCache]: Analyzing trace with hash -164570405, now seen corresponding path program 1 times [2022-11-03 01:53:28,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:28,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101646700] [2022-11-03 01:53:28,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:28,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:28,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:28,455 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:28,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 01:53:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:29,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 01:53:29,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:29,151 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 01:53:29,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:29,167 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:29,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101646700] [2022-11-03 01:53:29,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101646700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:29,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:29,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:53:29,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425369886] [2022-11-03 01:53:29,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:29,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:53:29,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:29,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:53:29,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:53:29,242 INFO L87 Difference]: Start difference. First operand has 263 states, 261 states have (on average 1.4980842911877394) internal successors, (391), 262 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:29,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:29,514 INFO L93 Difference]: Finished difference Result 1033 states and 1547 transitions. [2022-11-03 01:53:29,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:53:29,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:29,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:29,546 INFO L225 Difference]: With dead ends: 1033 [2022-11-03 01:53:29,553 INFO L226 Difference]: Without dead ends: 772 [2022-11-03 01:53:29,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 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 01:53:29,576 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 1142 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:29,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 1505 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:53:29,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2022-11-03 01:53:29,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 261. [2022-11-03 01:53:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.4884615384615385) internal successors, (387), 260 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:29,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 387 transitions. [2022-11-03 01:53:29,677 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 387 transitions. Word has length 65 [2022-11-03 01:53:29,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:29,678 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 387 transitions. [2022-11-03 01:53:29,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:29,679 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 387 transitions. [2022-11-03 01:53:29,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:29,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:29,684 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] [2022-11-03 01:53:29,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:53:29,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:29,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:29,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:29,904 INFO L85 PathProgramCache]: Analyzing trace with hash 514701849, now seen corresponding path program 1 times [2022-11-03 01:53:29,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:29,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497427717] [2022-11-03 01:53:29,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:29,906 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:29,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:29,910 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:29,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 01:53:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:30,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 01:53:30,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:30,465 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 01:53:30,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:30,466 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:30,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497427717] [2022-11-03 01:53:30,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497427717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:30,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:30,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:53:30,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103305467] [2022-11-03 01:53:30,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:30,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:53:30,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:30,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:53:30,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:53:30,470 INFO L87 Difference]: Start difference. First operand 261 states and 387 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:30,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:30,634 INFO L93 Difference]: Finished difference Result 1030 states and 1532 transitions. [2022-11-03 01:53:30,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:53:30,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:30,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:30,639 INFO L225 Difference]: With dead ends: 1030 [2022-11-03 01:53:30,639 INFO L226 Difference]: Without dead ends: 773 [2022-11-03 01:53:30,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:53:30,642 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 1518 mSDsluCounter, 1885 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:30,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 2264 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:53:30,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-11-03 01:53:30,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 263. [2022-11-03 01:53:30,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.484732824427481) internal successors, (389), 262 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:30,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 389 transitions. [2022-11-03 01:53:30,657 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 389 transitions. Word has length 65 [2022-11-03 01:53:30,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:30,657 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 389 transitions. [2022-11-03 01:53:30,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:30,658 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 389 transitions. [2022-11-03 01:53:30,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:30,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:30,659 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] [2022-11-03 01:53:30,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:53:30,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:30,872 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:30,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:30,873 INFO L85 PathProgramCache]: Analyzing trace with hash 716525783, now seen corresponding path program 1 times [2022-11-03 01:53:30,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:30,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123942795] [2022-11-03 01:53:30,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:30,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:30,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:30,876 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:30,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 01:53:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:31,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:53:31,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:31,440 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 01:53:31,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:31,441 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:31,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123942795] [2022-11-03 01:53:31,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123942795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:31,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:31,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:53:31,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337564563] [2022-11-03 01:53:31,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:31,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:53:31,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:31,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:53:31,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:53:31,447 INFO L87 Difference]: Start difference. First operand 263 states and 389 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:32,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:32,106 INFO L93 Difference]: Finished difference Result 1030 states and 1531 transitions. [2022-11-03 01:53:32,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:53:32,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:32,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:32,110 INFO L225 Difference]: With dead ends: 1030 [2022-11-03 01:53:32,110 INFO L226 Difference]: Without dead ends: 773 [2022-11-03 01:53:32,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:53:32,112 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 1509 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:32,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 2049 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 01:53:32,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-11-03 01:53:32,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 265. [2022-11-03 01:53:32,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.481060606060606) internal successors, (391), 264 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:32,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 391 transitions. [2022-11-03 01:53:32,139 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 391 transitions. Word has length 65 [2022-11-03 01:53:32,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:32,139 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 391 transitions. [2022-11-03 01:53:32,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:32,139 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 391 transitions. [2022-11-03 01:53:32,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:32,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:32,143 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] [2022-11-03 01:53:32,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:53:32,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:32,357 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:32,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:32,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1150254869, now seen corresponding path program 1 times [2022-11-03 01:53:32,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:32,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201423376] [2022-11-03 01:53:32,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:32,359 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:32,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:32,362 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:32,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 01:53:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:32,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 01:53:32,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:32,860 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 01:53:32,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:32,860 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:32,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201423376] [2022-11-03 01:53:32,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201423376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:32,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:32,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:53:32,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621675762] [2022-11-03 01:53:32,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:32,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:53:32,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:32,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:53:32,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:53:32,863 INFO L87 Difference]: Start difference. First operand 265 states and 391 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:33,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:33,010 INFO L93 Difference]: Finished difference Result 1030 states and 1530 transitions. [2022-11-03 01:53:33,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:53:33,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:33,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:33,022 INFO L225 Difference]: With dead ends: 1030 [2022-11-03 01:53:33,022 INFO L226 Difference]: Without dead ends: 773 [2022-11-03 01:53:33,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 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 01:53:33,024 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 1504 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 2256 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:33,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 2256 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:53:33,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-11-03 01:53:33,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 267. [2022-11-03 01:53:33,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.4774436090225564) internal successors, (393), 266 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:33,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 393 transitions. [2022-11-03 01:53:33,035 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 393 transitions. Word has length 65 [2022-11-03 01:53:33,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:33,035 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 393 transitions. [2022-11-03 01:53:33,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:33,035 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 393 transitions. [2022-11-03 01:53:33,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:33,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:33,036 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] [2022-11-03 01:53:33,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:53:33,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:33,255 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:33,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:33,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1190929619, now seen corresponding path program 1 times [2022-11-03 01:53:33,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:33,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683349564] [2022-11-03 01:53:33,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:33,257 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:33,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:33,258 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:33,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 01:53:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:33,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 01:53:33,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:33,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:53:33,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:33,742 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:33,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683349564] [2022-11-03 01:53:33,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683349564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:33,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:33,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:53:33,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653432069] [2022-11-03 01:53:33,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:33,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:53:33,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:33,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:53:33,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:53:33,753 INFO L87 Difference]: Start difference. First operand 267 states and 393 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:33,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:33,896 INFO L93 Difference]: Finished difference Result 1030 states and 1529 transitions. [2022-11-03 01:53:33,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:53:33,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:33,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:33,899 INFO L225 Difference]: With dead ends: 1030 [2022-11-03 01:53:33,900 INFO L226 Difference]: Without dead ends: 773 [2022-11-03 01:53:33,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 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 01:53:33,901 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 1497 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 2252 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:33,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 2252 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:53:33,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-11-03 01:53:33,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 269. [2022-11-03 01:53:33,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.4738805970149254) internal successors, (395), 268 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:33,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 395 transitions. [2022-11-03 01:53:33,911 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 395 transitions. Word has length 65 [2022-11-03 01:53:33,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:33,912 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 395 transitions. [2022-11-03 01:53:33,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:33,912 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 395 transitions. [2022-11-03 01:53:33,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:33,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:33,913 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] [2022-11-03 01:53:33,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 01:53:34,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:34,134 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:34,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:34,134 INFO L85 PathProgramCache]: Analyzing trace with hash 2066948625, now seen corresponding path program 1 times [2022-11-03 01:53:34,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:34,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239430382] [2022-11-03 01:53:34,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:34,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:34,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:34,136 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:34,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 01:53:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:34,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:53:34,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:34,689 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 01:53:34,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:34,689 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:34,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239430382] [2022-11-03 01:53:34,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239430382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:34,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:34,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:53:34,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940927479] [2022-11-03 01:53:34,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:34,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:53:34,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:34,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:53:34,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:53:34,692 INFO L87 Difference]: Start difference. First operand 269 states and 395 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:35,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:35,342 INFO L93 Difference]: Finished difference Result 1030 states and 1528 transitions. [2022-11-03 01:53:35,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:53:35,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:35,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:35,345 INFO L225 Difference]: With dead ends: 1030 [2022-11-03 01:53:35,346 INFO L226 Difference]: Without dead ends: 773 [2022-11-03 01:53:35,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:53:35,347 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 1488 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 2037 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:35,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 2037 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 01:53:35,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-11-03 01:53:35,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 271. [2022-11-03 01:53:35,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.4703703703703703) internal successors, (397), 270 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:35,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 397 transitions. [2022-11-03 01:53:35,358 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 397 transitions. Word has length 65 [2022-11-03 01:53:35,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:35,359 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 397 transitions. [2022-11-03 01:53:35,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:35,359 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 397 transitions. [2022-11-03 01:53:35,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:35,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:35,360 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] [2022-11-03 01:53:35,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 01:53:35,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:35,579 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:35,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:35,580 INFO L85 PathProgramCache]: Analyzing trace with hash -689678641, now seen corresponding path program 1 times [2022-11-03 01:53:35,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:35,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580313581] [2022-11-03 01:53:35,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:35,581 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:35,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:35,582 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:35,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 01:53:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:35,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-03 01:53:35,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:36,151 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 01:53:36,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:36,152 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:36,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580313581] [2022-11-03 01:53:36,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580313581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:36,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:36,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:53:36,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054576053] [2022-11-03 01:53:36,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:36,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:53:36,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:36,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:53:36,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:53:36,154 INFO L87 Difference]: Start difference. First operand 271 states and 397 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:36,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:36,492 INFO L93 Difference]: Finished difference Result 1030 states and 1527 transitions. [2022-11-03 01:53:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:53:36,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:36,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:36,495 INFO L225 Difference]: With dead ends: 1030 [2022-11-03 01:53:36,496 INFO L226 Difference]: Without dead ends: 773 [2022-11-03 01:53:36,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:53:36,497 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 1481 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 2195 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:36,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 2195 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:53:36,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-11-03 01:53:36,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 273. [2022-11-03 01:53:36,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.4669117647058822) internal successors, (399), 272 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:36,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 399 transitions. [2022-11-03 01:53:36,507 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 399 transitions. Word has length 65 [2022-11-03 01:53:36,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:36,508 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 399 transitions. [2022-11-03 01:53:36,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:36,508 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 399 transitions. [2022-11-03 01:53:36,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:36,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:36,509 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] [2022-11-03 01:53:36,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 01:53:36,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:36,733 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:36,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:36,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1170758899, now seen corresponding path program 1 times [2022-11-03 01:53:36,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:36,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719350823] [2022-11-03 01:53:36,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:36,735 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:36,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:36,736 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:36,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 01:53:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:37,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 01:53:37,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:37,254 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 01:53:37,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:37,255 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:37,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1719350823] [2022-11-03 01:53:37,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1719350823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:37,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:37,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:53:37,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524059441] [2022-11-03 01:53:37,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:37,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:53:37,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:37,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:53:37,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:53:37,258 INFO L87 Difference]: Start difference. First operand 273 states and 399 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:37,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:37,407 INFO L93 Difference]: Finished difference Result 1044 states and 1547 transitions. [2022-11-03 01:53:37,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:53:37,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:37,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:37,410 INFO L225 Difference]: With dead ends: 1044 [2022-11-03 01:53:37,411 INFO L226 Difference]: Without dead ends: 787 [2022-11-03 01:53:37,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 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 01:53:37,414 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 1499 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:37,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 2257 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:53:37,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-11-03 01:53:37,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 277. [2022-11-03 01:53:37,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.463768115942029) internal successors, (404), 276 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:37,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 404 transitions. [2022-11-03 01:53:37,425 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 404 transitions. Word has length 65 [2022-11-03 01:53:37,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:37,425 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 404 transitions. [2022-11-03 01:53:37,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:37,426 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 404 transitions. [2022-11-03 01:53:37,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:37,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:37,427 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] [2022-11-03 01:53:37,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 01:53:37,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:37,641 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:37,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:37,642 INFO L85 PathProgramCache]: Analyzing trace with hash 757513803, now seen corresponding path program 1 times [2022-11-03 01:53:37,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:37,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524801317] [2022-11-03 01:53:37,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:37,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:37,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:37,644 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:37,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 01:53:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:38,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:53:38,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:38,256 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 01:53:38,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:38,256 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:38,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524801317] [2022-11-03 01:53:38,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524801317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:38,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:38,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:53:38,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362329117] [2022-11-03 01:53:38,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:38,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:53:38,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:38,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:53:38,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:53:38,259 INFO L87 Difference]: Start difference. First operand 277 states and 404 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:38,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:38,831 INFO L93 Difference]: Finished difference Result 1044 states and 1546 transitions. [2022-11-03 01:53:38,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:53:38,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:38,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:38,835 INFO L225 Difference]: With dead ends: 1044 [2022-11-03 01:53:38,835 INFO L226 Difference]: Without dead ends: 787 [2022-11-03 01:53:38,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 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 01:53:38,836 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 1490 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:38,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 2042 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:53:38,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-11-03 01:53:38,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 279. [2022-11-03 01:53:38,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.460431654676259) internal successors, (406), 278 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:38,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 406 transitions. [2022-11-03 01:53:38,847 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 406 transitions. Word has length 65 [2022-11-03 01:53:38,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:38,848 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 406 transitions. [2022-11-03 01:53:38,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:38,848 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 406 transitions. [2022-11-03 01:53:38,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:38,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:38,849 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] [2022-11-03 01:53:38,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 01:53:39,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:39,063 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:39,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:39,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1291874039, now seen corresponding path program 1 times [2022-11-03 01:53:39,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:39,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560928058] [2022-11-03 01:53:39,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:39,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:39,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:39,066 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:39,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 01:53:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:39,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 01:53:39,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:39,597 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 01:53:39,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:39,597 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:39,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560928058] [2022-11-03 01:53:39,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560928058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:39,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:39,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:53:39,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770043680] [2022-11-03 01:53:39,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:39,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:53:39,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:39,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:53:39,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:53:39,600 INFO L87 Difference]: Start difference. First operand 279 states and 406 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:39,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:39,700 INFO L93 Difference]: Finished difference Result 1029 states and 1523 transitions. [2022-11-03 01:53:39,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:53:39,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:39,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:39,704 INFO L225 Difference]: With dead ends: 1029 [2022-11-03 01:53:39,704 INFO L226 Difference]: Without dead ends: 772 [2022-11-03 01:53:39,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 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 01:53:39,706 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 1083 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:39,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1499 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:53:39,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2022-11-03 01:53:39,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 281. [2022-11-03 01:53:39,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.457142857142857) internal successors, (408), 280 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:39,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 408 transitions. [2022-11-03 01:53:39,721 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 408 transitions. Word has length 65 [2022-11-03 01:53:39,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:39,722 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 408 transitions. [2022-11-03 01:53:39,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:39,722 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 408 transitions. [2022-11-03 01:53:39,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:39,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:39,724 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] [2022-11-03 01:53:39,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 01:53:39,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:39,938 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:39,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:39,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1043727545, now seen corresponding path program 1 times [2022-11-03 01:53:39,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:39,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901219058] [2022-11-03 01:53:39,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:39,939 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:39,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:39,940 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:39,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 01:53:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:40,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 01:53:40,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:40,451 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 01:53:40,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:40,452 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:40,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901219058] [2022-11-03 01:53:40,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901219058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:40,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:40,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:53:40,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803741510] [2022-11-03 01:53:40,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:40,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:53:40,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:40,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:53:40,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:53:40,455 INFO L87 Difference]: Start difference. First operand 281 states and 408 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:40,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:40,552 INFO L93 Difference]: Finished difference Result 1029 states and 1522 transitions. [2022-11-03 01:53:40,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:53:40,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:40,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:40,558 INFO L225 Difference]: With dead ends: 1029 [2022-11-03 01:53:40,558 INFO L226 Difference]: Without dead ends: 772 [2022-11-03 01:53:40,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 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 01:53:40,560 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 1077 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:40,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 1498 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:53:40,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2022-11-03 01:53:40,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 283. [2022-11-03 01:53:40,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.4539007092198581) internal successors, (410), 282 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:40,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 410 transitions. [2022-11-03 01:53:40,571 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 410 transitions. Word has length 65 [2022-11-03 01:53:40,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:40,573 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 410 transitions. [2022-11-03 01:53:40,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:40,573 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 410 transitions. [2022-11-03 01:53:40,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:40,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:40,574 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] [2022-11-03 01:53:40,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 01:53:40,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:40,787 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:40,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:40,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1879432453, now seen corresponding path program 1 times [2022-11-03 01:53:40,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:40,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350842563] [2022-11-03 01:53:40,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:40,789 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:40,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:40,789 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:40,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 01:53:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:41,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:53:41,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:41,437 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 01:53:41,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:41,437 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:41,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350842563] [2022-11-03 01:53:41,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350842563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:41,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:41,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:53:41,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554753172] [2022-11-03 01:53:41,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:41,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:53:41,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:41,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:53:41,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:53:41,440 INFO L87 Difference]: Start difference. First operand 283 states and 410 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:42,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:42,011 INFO L93 Difference]: Finished difference Result 1050 states and 1552 transitions. [2022-11-03 01:53:42,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:53:42,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:42,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:42,015 INFO L225 Difference]: With dead ends: 1050 [2022-11-03 01:53:42,015 INFO L226 Difference]: Without dead ends: 793 [2022-11-03 01:53:42,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 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 01:53:42,016 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 1480 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:42,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 2038 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:53:42,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-11-03 01:53:42,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 285. [2022-11-03 01:53:42,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.4507042253521127) internal successors, (412), 284 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:42,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 412 transitions. [2022-11-03 01:53:42,027 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 412 transitions. Word has length 65 [2022-11-03 01:53:42,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:42,028 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 412 transitions. [2022-11-03 01:53:42,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:42,028 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 412 transitions. [2022-11-03 01:53:42,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:42,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:42,029 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] [2022-11-03 01:53:42,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 01:53:42,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:42,242 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:42,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:42,243 INFO L85 PathProgramCache]: Analyzing trace with hash 850073155, now seen corresponding path program 1 times [2022-11-03 01:53:42,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:42,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881753689] [2022-11-03 01:53:42,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:42,243 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:42,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:42,244 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:42,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 01:53:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:42,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-03 01:53:42,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:42,993 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 01:53:42,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:42,994 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:42,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881753689] [2022-11-03 01:53:42,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881753689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:42,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:42,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:53:42,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84997850] [2022-11-03 01:53:42,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:42,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:53:42,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:42,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:53:42,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:53:42,996 INFO L87 Difference]: Start difference. First operand 285 states and 412 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:43,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:43,285 INFO L93 Difference]: Finished difference Result 1044 states and 1542 transitions. [2022-11-03 01:53:43,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:53:43,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:43,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:43,296 INFO L225 Difference]: With dead ends: 1044 [2022-11-03 01:53:43,296 INFO L226 Difference]: Without dead ends: 787 [2022-11-03 01:53:43,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:53:43,299 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1462 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:43,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1462 Valid, 2191 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:53:43,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-11-03 01:53:43,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 287. [2022-11-03 01:53:43,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.4475524475524475) internal successors, (414), 286 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:43,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 414 transitions. [2022-11-03 01:53:43,311 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 414 transitions. Word has length 65 [2022-11-03 01:53:43,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:43,311 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 414 transitions. [2022-11-03 01:53:43,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:43,311 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 414 transitions. [2022-11-03 01:53:43,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:43,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:43,312 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] [2022-11-03 01:53:43,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 01:53:43,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:43,526 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:43,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:43,527 INFO L85 PathProgramCache]: Analyzing trace with hash 455706369, now seen corresponding path program 1 times [2022-11-03 01:53:43,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:43,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201577678] [2022-11-03 01:53:43,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:43,527 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:43,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:43,529 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:43,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 01:53:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:43,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:53:43,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:44,040 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 01:53:44,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:44,041 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:44,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201577678] [2022-11-03 01:53:44,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201577678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:44,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:44,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:53:44,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930336322] [2022-11-03 01:53:44,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:44,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:53:44,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:44,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:53:44,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:53:44,043 INFO L87 Difference]: Start difference. First operand 287 states and 414 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:44,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:44,581 INFO L93 Difference]: Finished difference Result 1029 states and 1519 transitions. [2022-11-03 01:53:44,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:53:44,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:44,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:44,584 INFO L225 Difference]: With dead ends: 1029 [2022-11-03 01:53:44,584 INFO L226 Difference]: Without dead ends: 772 [2022-11-03 01:53:44,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 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 01:53:44,585 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 1053 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:44,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 1284 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:53:44,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2022-11-03 01:53:44,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 291. [2022-11-03 01:53:44,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.4448275862068964) internal successors, (419), 290 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 01:53:44,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 419 transitions. [2022-11-03 01:53:44,594 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 419 transitions. Word has length 65 [2022-11-03 01:53:44,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:44,595 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 419 transitions. [2022-11-03 01:53:44,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:44,595 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 419 transitions. [2022-11-03 01:53:44,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:44,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:44,596 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] [2022-11-03 01:53:44,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-03 01:53:44,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:44,816 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:44,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:44,816 INFO L85 PathProgramCache]: Analyzing trace with hash 730465983, now seen corresponding path program 1 times [2022-11-03 01:53:44,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:44,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181252253] [2022-11-03 01:53:44,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:44,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:44,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:44,818 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:44,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 01:53:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:45,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:53:45,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:45,363 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 01:53:45,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:45,363 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:45,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181252253] [2022-11-03 01:53:45,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [181252253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:45,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:45,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:53:45,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474632427] [2022-11-03 01:53:45,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:45,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:53:45,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:45,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:53:45,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:53:45,369 INFO L87 Difference]: Start difference. First operand 291 states and 419 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:45,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:45,938 INFO L93 Difference]: Finished difference Result 1060 states and 1564 transitions. [2022-11-03 01:53:45,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:53:45,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:45,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:45,941 INFO L225 Difference]: With dead ends: 1060 [2022-11-03 01:53:45,941 INFO L226 Difference]: Without dead ends: 803 [2022-11-03 01:53:45,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 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 01:53:45,942 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 1473 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:45,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 2019 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:53:45,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-11-03 01:53:45,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 293. [2022-11-03 01:53:45,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.4417808219178083) internal successors, (421), 292 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 01:53:45,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 421 transitions. [2022-11-03 01:53:45,952 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 421 transitions. Word has length 65 [2022-11-03 01:53:45,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:45,953 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 421 transitions. [2022-11-03 01:53:45,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:45,953 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 421 transitions. [2022-11-03 01:53:45,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:45,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:45,954 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] [2022-11-03 01:53:45,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 01:53:46,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:46,168 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:46,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:46,168 INFO L85 PathProgramCache]: Analyzing trace with hash 753098237, now seen corresponding path program 1 times [2022-11-03 01:53:46,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:46,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182128924] [2022-11-03 01:53:46,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:46,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:46,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:46,170 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:46,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 01:53:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:46,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:53:46,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:46,710 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 01:53:46,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:46,710 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:46,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182128924] [2022-11-03 01:53:46,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182128924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:46,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:46,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:53:46,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601980560] [2022-11-03 01:53:46,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:46,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:53:46,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:46,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:53:46,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:53:46,712 INFO L87 Difference]: Start difference. First operand 293 states and 421 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:47,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:47,235 INFO L93 Difference]: Finished difference Result 1060 states and 1563 transitions. [2022-11-03 01:53:47,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:53:47,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:47,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:47,239 INFO L225 Difference]: With dead ends: 1060 [2022-11-03 01:53:47,239 INFO L226 Difference]: Without dead ends: 803 [2022-11-03 01:53:47,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 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 01:53:47,241 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 1466 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 2024 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:47,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 2024 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:53:47,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-11-03 01:53:47,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 295. [2022-11-03 01:53:47,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.4387755102040816) internal successors, (423), 294 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:47,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 423 transitions. [2022-11-03 01:53:47,251 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 423 transitions. Word has length 65 [2022-11-03 01:53:47,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:47,251 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 423 transitions. [2022-11-03 01:53:47,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:47,251 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 423 transitions. [2022-11-03 01:53:47,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:47,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:47,252 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] [2022-11-03 01:53:47,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-11-03 01:53:47,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:47,466 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:47,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:47,466 INFO L85 PathProgramCache]: Analyzing trace with hash 243625147, now seen corresponding path program 1 times [2022-11-03 01:53:47,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:47,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748591154] [2022-11-03 01:53:47,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:47,467 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:47,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:47,468 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:47,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 01:53:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:47,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:53:47,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:47,972 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 01:53:47,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:47,973 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:47,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748591154] [2022-11-03 01:53:47,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748591154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:47,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:47,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:53:47,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499616234] [2022-11-03 01:53:47,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:47,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:53:47,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:47,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:53:47,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:53:47,976 INFO L87 Difference]: Start difference. First operand 295 states and 423 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:48,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:48,532 INFO L93 Difference]: Finished difference Result 1060 states and 1562 transitions. [2022-11-03 01:53:48,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:53:48,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:48,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:48,536 INFO L225 Difference]: With dead ends: 1060 [2022-11-03 01:53:48,536 INFO L226 Difference]: Without dead ends: 803 [2022-11-03 01:53:48,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 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 01:53:48,538 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 1459 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1459 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:48,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1459 Valid, 2011 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:53:48,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-11-03 01:53:48,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 297. [2022-11-03 01:53:48,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.4358108108108107) internal successors, (425), 296 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 01:53:48,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 425 transitions. [2022-11-03 01:53:48,566 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 425 transitions. Word has length 65 [2022-11-03 01:53:48,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:48,566 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 425 transitions. [2022-11-03 01:53:48,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:48,566 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 425 transitions. [2022-11-03 01:53:48,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:48,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:48,568 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] [2022-11-03 01:53:48,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 01:53:48,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:48,781 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:48,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:48,782 INFO L85 PathProgramCache]: Analyzing trace with hash 305664761, now seen corresponding path program 1 times [2022-11-03 01:53:48,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:48,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029324999] [2022-11-03 01:53:48,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:48,783 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:48,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:48,783 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:48,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 01:53:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:49,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:53:49,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:49,272 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 01:53:49,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:49,272 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:49,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029324999] [2022-11-03 01:53:49,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029324999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:49,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:49,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:53:49,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359829295] [2022-11-03 01:53:49,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:49,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:53:49,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:49,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:53:49,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:53:49,277 INFO L87 Difference]: Start difference. First operand 297 states and 425 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:49,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:49,815 INFO L93 Difference]: Finished difference Result 1060 states and 1561 transitions. [2022-11-03 01:53:49,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:53:49,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:49,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:49,827 INFO L225 Difference]: With dead ends: 1060 [2022-11-03 01:53:49,827 INFO L226 Difference]: Without dead ends: 803 [2022-11-03 01:53:49,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 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 01:53:49,828 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 1452 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 2007 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:49,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1452 Valid, 2007 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:53:49,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-11-03 01:53:49,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 299. [2022-11-03 01:53:49,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.4328859060402686) internal successors, (427), 298 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:49,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 427 transitions. [2022-11-03 01:53:49,838 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 427 transitions. Word has length 65 [2022-11-03 01:53:49,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:49,838 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 427 transitions. [2022-11-03 01:53:49,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:49,839 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 427 transitions. [2022-11-03 01:53:49,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:49,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:49,840 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] [2022-11-03 01:53:49,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 01:53:50,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:50,053 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:50,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:50,053 INFO L85 PathProgramCache]: Analyzing trace with hash 171651255, now seen corresponding path program 1 times [2022-11-03 01:53:50,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:50,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302147746] [2022-11-03 01:53:50,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:50,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:50,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:50,055 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:50,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 01:53:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:50,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:53:50,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:50,593 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 01:53:50,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:50,594 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:50,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302147746] [2022-11-03 01:53:50,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302147746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:50,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:50,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:53:50,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747178413] [2022-11-03 01:53:50,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:50,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:53:50,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:50,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:53:50,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:53:50,596 INFO L87 Difference]: Start difference. First operand 299 states and 427 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:51,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:51,111 INFO L93 Difference]: Finished difference Result 1060 states and 1560 transitions. [2022-11-03 01:53:51,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:53:51,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:51,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:51,114 INFO L225 Difference]: With dead ends: 1060 [2022-11-03 01:53:51,114 INFO L226 Difference]: Without dead ends: 803 [2022-11-03 01:53:51,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 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 01:53:51,116 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 1445 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:51,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1445 Valid, 2012 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:53:51,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-11-03 01:53:51,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 301. [2022-11-03 01:53:51,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.43) internal successors, (429), 300 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:51,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 429 transitions. [2022-11-03 01:53:51,126 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 429 transitions. Word has length 65 [2022-11-03 01:53:51,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:51,126 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 429 transitions. [2022-11-03 01:53:51,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:51,126 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 429 transitions. [2022-11-03 01:53:51,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:51,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:51,127 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] [2022-11-03 01:53:51,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 01:53:51,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:51,341 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:51,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:51,341 INFO L85 PathProgramCache]: Analyzing trace with hash 390505973, now seen corresponding path program 1 times [2022-11-03 01:53:51,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:51,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628583291] [2022-11-03 01:53:51,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:51,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:51,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:51,343 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:51,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 01:53:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:51,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:53:51,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:51,852 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 01:53:51,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:51,852 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:51,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628583291] [2022-11-03 01:53:51,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628583291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:51,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:51,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:53:51,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430785058] [2022-11-03 01:53:51,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:51,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:53:51,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:51,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:53:51,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:53:51,854 INFO L87 Difference]: Start difference. First operand 301 states and 429 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:52,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:52,368 INFO L93 Difference]: Finished difference Result 1060 states and 1559 transitions. [2022-11-03 01:53:52,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:53:52,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:52,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:52,373 INFO L225 Difference]: With dead ends: 1060 [2022-11-03 01:53:52,373 INFO L226 Difference]: Without dead ends: 803 [2022-11-03 01:53:52,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 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 01:53:52,375 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 1438 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1438 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:52,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1438 Valid, 2014 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:53:52,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-11-03 01:53:52,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 303. [2022-11-03 01:53:52,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.4271523178807948) internal successors, (431), 302 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:52,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 431 transitions. [2022-11-03 01:53:52,385 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 431 transitions. Word has length 65 [2022-11-03 01:53:52,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:52,385 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 431 transitions. [2022-11-03 01:53:52,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:52,385 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 431 transitions. [2022-11-03 01:53:52,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:52,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:52,386 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] [2022-11-03 01:53:52,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 01:53:52,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:52,600 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:52,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:52,600 INFO L85 PathProgramCache]: Analyzing trace with hash -427142477, now seen corresponding path program 1 times [2022-11-03 01:53:52,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:52,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226417359] [2022-11-03 01:53:52,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:52,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:52,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:52,602 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:52,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 01:53:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:52,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:53:52,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:53,097 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 01:53:53,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:53,097 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:53,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226417359] [2022-11-03 01:53:53,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226417359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:53,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:53,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:53:53,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204095751] [2022-11-03 01:53:53,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:53,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:53:53,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:53,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:53:53,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:53:53,099 INFO L87 Difference]: Start difference. First operand 303 states and 431 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:53,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:53,626 INFO L93 Difference]: Finished difference Result 1060 states and 1558 transitions. [2022-11-03 01:53:53,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:53:53,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:53,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:53,631 INFO L225 Difference]: With dead ends: 1060 [2022-11-03 01:53:53,631 INFO L226 Difference]: Without dead ends: 803 [2022-11-03 01:53:53,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 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 01:53:53,632 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 1431 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:53,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1431 Valid, 1995 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:53:53,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-11-03 01:53:53,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 305. [2022-11-03 01:53:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.424342105263158) internal successors, (433), 304 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:53,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 433 transitions. [2022-11-03 01:53:53,641 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 433 transitions. Word has length 65 [2022-11-03 01:53:53,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:53,642 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 433 transitions. [2022-11-03 01:53:53,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:53,642 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 433 transitions. [2022-11-03 01:53:53,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:53,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:53,643 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] [2022-11-03 01:53:53,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 01:53:53,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:53,857 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:53,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:53,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1873680113, now seen corresponding path program 1 times [2022-11-03 01:53:53,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:53,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424380176] [2022-11-03 01:53:53,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:53,858 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:53,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:53,859 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:53,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 01:53:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:54,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:53:54,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:54,386 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 01:53:54,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:54,387 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:54,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424380176] [2022-11-03 01:53:54,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424380176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:54,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:54,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:53:54,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818206388] [2022-11-03 01:53:54,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:54,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:53:54,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:54,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:53:54,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:53:54,390 INFO L87 Difference]: Start difference. First operand 305 states and 433 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:54,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:54,932 INFO L93 Difference]: Finished difference Result 1060 states and 1557 transitions. [2022-11-03 01:53:54,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:53:54,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:54,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:54,935 INFO L225 Difference]: With dead ends: 1060 [2022-11-03 01:53:54,936 INFO L226 Difference]: Without dead ends: 803 [2022-11-03 01:53:54,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 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 01:53:54,937 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 1419 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:54,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1419 Valid, 1997 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:53:54,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-11-03 01:53:54,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 309. [2022-11-03 01:53:54,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.422077922077922) internal successors, (438), 308 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:54,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 438 transitions. [2022-11-03 01:53:54,946 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 438 transitions. Word has length 65 [2022-11-03 01:53:54,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:54,946 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 438 transitions. [2022-11-03 01:53:54,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:54,947 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 438 transitions. [2022-11-03 01:53:54,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:54,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:54,948 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] [2022-11-03 01:53:54,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-11-03 01:53:55,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:55,155 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:55,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:55,155 INFO L85 PathProgramCache]: Analyzing trace with hash 862562863, now seen corresponding path program 1 times [2022-11-03 01:53:55,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:55,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263388394] [2022-11-03 01:53:55,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:55,156 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:55,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:55,157 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:55,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 01:53:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:55,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:53:55,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:55,632 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 01:53:55,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:55,632 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:55,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263388394] [2022-11-03 01:53:55,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263388394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:55,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:55,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:53:55,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501880893] [2022-11-03 01:53:55,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:55,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:53:55,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:55,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:53:55,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:53:55,634 INFO L87 Difference]: Start difference. First operand 309 states and 438 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:56,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:56,149 INFO L93 Difference]: Finished difference Result 1060 states and 1556 transitions. [2022-11-03 01:53:56,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:53:56,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:56,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:56,153 INFO L225 Difference]: With dead ends: 1060 [2022-11-03 01:53:56,153 INFO L226 Difference]: Without dead ends: 803 [2022-11-03 01:53:56,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 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 01:53:56,154 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 1412 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:56,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 1984 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:53:56,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-11-03 01:53:56,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 311. [2022-11-03 01:53:56,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.4193548387096775) internal successors, (440), 310 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:56,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 440 transitions. [2022-11-03 01:53:56,164 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 440 transitions. Word has length 65 [2022-11-03 01:53:56,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:56,164 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 440 transitions. [2022-11-03 01:53:56,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:56,165 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 440 transitions. [2022-11-03 01:53:56,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:56,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:56,166 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] [2022-11-03 01:53:56,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-03 01:53:56,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:56,379 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:56,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:56,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1120728301, now seen corresponding path program 1 times [2022-11-03 01:53:56,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:56,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588942716] [2022-11-03 01:53:56,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:56,380 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:56,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:56,381 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:56,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 01:53:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:56,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:53:56,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:56,884 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 01:53:56,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:56,884 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:56,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588942716] [2022-11-03 01:53:56,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588942716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:56,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:56,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:53:56,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144515860] [2022-11-03 01:53:56,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:56,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:53:56,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:56,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:53:56,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:53:56,886 INFO L87 Difference]: Start difference. First operand 311 states and 440 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:57,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:57,423 INFO L93 Difference]: Finished difference Result 1060 states and 1555 transitions. [2022-11-03 01:53:57,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:53:57,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:57,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:57,427 INFO L225 Difference]: With dead ends: 1060 [2022-11-03 01:53:57,427 INFO L226 Difference]: Without dead ends: 803 [2022-11-03 01:53:57,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 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 01:53:57,428 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1405 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1405 SdHoareTripleChecker+Valid, 1980 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:57,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1405 Valid, 1980 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:53:57,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-11-03 01:53:57,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 313. [2022-11-03 01:53:57,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 1.4166666666666667) internal successors, (442), 312 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:57,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 442 transitions. [2022-11-03 01:53:57,437 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 442 transitions. Word has length 65 [2022-11-03 01:53:57,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:57,438 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 442 transitions. [2022-11-03 01:53:57,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:57,438 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 442 transitions. [2022-11-03 01:53:57,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:57,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:57,439 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] [2022-11-03 01:53:57,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-03 01:53:57,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:57,652 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:57,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:57,652 INFO L85 PathProgramCache]: Analyzing trace with hash 727701291, now seen corresponding path program 1 times [2022-11-03 01:53:57,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:57,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919561942] [2022-11-03 01:53:57,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:57,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:57,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:57,654 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:57,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 01:53:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:57,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:53:57,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:58,152 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 01:53:58,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:58,153 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:58,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919561942] [2022-11-03 01:53:58,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919561942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:58,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:58,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:53:58,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754490029] [2022-11-03 01:53:58,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:58,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:53:58,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:58,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:53:58,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:53:58,155 INFO L87 Difference]: Start difference. First operand 313 states and 442 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:58,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:58,683 INFO L93 Difference]: Finished difference Result 1060 states and 1554 transitions. [2022-11-03 01:53:58,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:53:58,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:58,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:58,686 INFO L225 Difference]: With dead ends: 1060 [2022-11-03 01:53:58,686 INFO L226 Difference]: Without dead ends: 803 [2022-11-03 01:53:58,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 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 01:53:58,687 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 1398 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:58,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 1985 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:53:58,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-11-03 01:53:58,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 315. [2022-11-03 01:53:58,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.414012738853503) internal successors, (444), 314 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:58,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 444 transitions. [2022-11-03 01:53:58,696 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 444 transitions. Word has length 65 [2022-11-03 01:53:58,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:58,696 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 444 transitions. [2022-11-03 01:53:58,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:58,697 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 444 transitions. [2022-11-03 01:53:58,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:58,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:58,697 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] [2022-11-03 01:53:58,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-03 01:53:58,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:53:58,898 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:58,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:58,898 INFO L85 PathProgramCache]: Analyzing trace with hash -81645335, now seen corresponding path program 1 times [2022-11-03 01:53:58,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:53:58,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588986721] [2022-11-03 01:53:58,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:58,899 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:53:58,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:53:58,900 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:53:58,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-03 01:53:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:59,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:53:59,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:59,427 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 01:53:59,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:53:59,428 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:53:59,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588986721] [2022-11-03 01:53:59,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588986721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:59,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:59,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:53:59,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888483985] [2022-11-03 01:53:59,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:59,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:53:59,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:53:59,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:53:59,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:53:59,431 INFO L87 Difference]: Start difference. First operand 315 states and 444 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:59,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:59,958 INFO L93 Difference]: Finished difference Result 1060 states and 1553 transitions. [2022-11-03 01:53:59,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:53:59,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:53:59,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:59,961 INFO L225 Difference]: With dead ends: 1060 [2022-11-03 01:53:59,962 INFO L226 Difference]: Without dead ends: 803 [2022-11-03 01:53:59,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 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 01:53:59,963 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1391 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 1987 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:59,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 1987 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:53:59,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-11-03 01:53:59,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 317. [2022-11-03 01:53:59,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.4113924050632911) internal successors, (446), 316 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:59,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 446 transitions. [2022-11-03 01:53:59,973 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 446 transitions. Word has length 65 [2022-11-03 01:53:59,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:59,974 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 446 transitions. [2022-11-03 01:53:59,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:59,974 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 446 transitions. [2022-11-03 01:53:59,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:53:59,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:59,975 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] [2022-11-03 01:53:59,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:00,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:00,188 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:00,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:00,188 INFO L85 PathProgramCache]: Analyzing trace with hash -24387033, now seen corresponding path program 1 times [2022-11-03 01:54:00,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:00,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71112763] [2022-11-03 01:54:00,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:00,189 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:00,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:00,190 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:00,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 01:54:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:00,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:54:00,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:00,737 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 01:54:00,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:00,737 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:00,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71112763] [2022-11-03 01:54:00,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71112763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:00,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:00,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:54:00,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715973003] [2022-11-03 01:54:00,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:00,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:54:00,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:00,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:54:00,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:54:00,739 INFO L87 Difference]: Start difference. First operand 317 states and 446 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:01,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:01,243 INFO L93 Difference]: Finished difference Result 1060 states and 1552 transitions. [2022-11-03 01:54:01,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:54:01,244 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:54:01,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:01,247 INFO L225 Difference]: With dead ends: 1060 [2022-11-03 01:54:01,247 INFO L226 Difference]: Without dead ends: 803 [2022-11-03 01:54:01,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 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 01:54:01,248 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 1384 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:01,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1384 Valid, 1986 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:54:01,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-11-03 01:54:01,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 319. [2022-11-03 01:54:01,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 1.4088050314465408) internal successors, (448), 318 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:01,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 448 transitions. [2022-11-03 01:54:01,257 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 448 transitions. Word has length 65 [2022-11-03 01:54:01,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:01,257 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 448 transitions. [2022-11-03 01:54:01,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:01,257 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 448 transitions. [2022-11-03 01:54:01,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:54:01,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:01,258 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] [2022-11-03 01:54:01,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-11-03 01:54:01,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:01,472 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:01,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:01,472 INFO L85 PathProgramCache]: Analyzing trace with hash -24327451, now seen corresponding path program 1 times [2022-11-03 01:54:01,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:01,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221389242] [2022-11-03 01:54:01,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:01,473 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:01,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:01,475 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:01,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-03 01:54:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:01,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-03 01:54:01,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:02,514 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 01:54:02,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:02,514 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:02,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221389242] [2022-11-03 01:54:02,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221389242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:02,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:02,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:54:02,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774691145] [2022-11-03 01:54:02,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:02,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:54:02,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:02,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:54:02,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:54:02,517 INFO L87 Difference]: Start difference. First operand 319 states and 448 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:03,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:03,059 INFO L93 Difference]: Finished difference Result 577 states and 832 transitions. [2022-11-03 01:54:03,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:54:03,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 01:54:03,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:03,063 INFO L225 Difference]: With dead ends: 577 [2022-11-03 01:54:03,063 INFO L226 Difference]: Without dead ends: 575 [2022-11-03 01:54:03,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:54:03,064 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 1025 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:03,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 1353 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:54:03,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-11-03 01:54:03,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 321. [2022-11-03 01:54:03,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.40625) internal successors, (450), 320 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:03,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 450 transitions. [2022-11-03 01:54:03,072 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 450 transitions. Word has length 65 [2022-11-03 01:54:03,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:03,072 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 450 transitions. [2022-11-03 01:54:03,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:03,073 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 450 transitions. [2022-11-03 01:54:03,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:03,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:03,078 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:03,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:03,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:03,291 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:03,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:03,291 INFO L85 PathProgramCache]: Analyzing trace with hash -199768975, now seen corresponding path program 1 times [2022-11-03 01:54:03,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:03,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450441159] [2022-11-03 01:54:03,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:03,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:03,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:03,294 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:03,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-03 01:54:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:04,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:54:04,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:04,323 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:04,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:04,323 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:04,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450441159] [2022-11-03 01:54:04,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450441159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:04,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:04,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:54:04,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978440419] [2022-11-03 01:54:04,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:04,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:54:04,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:04,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:54:04,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:54:04,326 INFO L87 Difference]: Start difference. First operand 321 states and 450 transitions. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:04,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:04,786 INFO L93 Difference]: Finished difference Result 1027 states and 1503 transitions. [2022-11-03 01:54:04,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:54:04,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:04,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:04,788 INFO L225 Difference]: With dead ends: 1027 [2022-11-03 01:54:04,788 INFO L226 Difference]: Without dead ends: 770 [2022-11-03 01:54:04,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 317 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 01:54:04,789 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 956 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:04,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 1271 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:54:04,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-11-03 01:54:04,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 323. [2022-11-03 01:54:04,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.4037267080745341) internal successors, (452), 322 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:04,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 452 transitions. [2022-11-03 01:54:04,798 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 452 transitions. Word has length 320 [2022-11-03 01:54:04,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:04,799 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 452 transitions. [2022-11-03 01:54:04,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:04,799 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 452 transitions. [2022-11-03 01:54:04,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:04,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:04,802 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:04,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-03 01:54:05,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:05,015 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:05,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:05,015 INFO L85 PathProgramCache]: Analyzing trace with hash -374891277, now seen corresponding path program 1 times [2022-11-03 01:54:05,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:05,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580627681] [2022-11-03 01:54:05,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:05,017 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:05,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:05,019 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:05,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-03 01:54:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:05,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 01:54:05,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:06,146 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:06,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:06,147 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:06,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580627681] [2022-11-03 01:54:06,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580627681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:06,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:06,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:54:06,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698824311] [2022-11-03 01:54:06,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:06,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:54:06,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:06,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:54:06,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:54:06,149 INFO L87 Difference]: Start difference. First operand 323 states and 452 transitions. Second operand has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:06,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:06,403 INFO L93 Difference]: Finished difference Result 584 states and 841 transitions. [2022-11-03 01:54:06,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:54:06,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:06,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:06,405 INFO L225 Difference]: With dead ends: 584 [2022-11-03 01:54:06,405 INFO L226 Difference]: Without dead ends: 327 [2022-11-03 01:54:06,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:54:06,406 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 7 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:06,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1429 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 20 Unchecked, 0.2s Time] [2022-11-03 01:54:06,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-03 01:54:06,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2022-11-03 01:54:06,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.401840490797546) internal successors, (457), 326 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:06,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 457 transitions. [2022-11-03 01:54:06,414 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 457 transitions. Word has length 320 [2022-11-03 01:54:06,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:06,415 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 457 transitions. [2022-11-03 01:54:06,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:06,415 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 457 transitions. [2022-11-03 01:54:06,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:06,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:06,417 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:06,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:06,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:06,643 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:06,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:06,643 INFO L85 PathProgramCache]: Analyzing trace with hash 309069429, now seen corresponding path program 1 times [2022-11-03 01:54:06,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:06,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552654397] [2022-11-03 01:54:06,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:06,645 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:06,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:06,646 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:06,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 01:54:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:07,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 01:54:07,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:07,768 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:07,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:07,768 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:07,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552654397] [2022-11-03 01:54:07,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552654397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:07,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:07,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:54:07,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650438670] [2022-11-03 01:54:07,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:07,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:54:07,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:07,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:54:07,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:54:07,771 INFO L87 Difference]: Start difference. First operand 327 states and 457 transitions. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:08,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:08,013 INFO L93 Difference]: Finished difference Result 588 states and 846 transitions. [2022-11-03 01:54:08,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:54:08,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:08,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:08,015 INFO L225 Difference]: With dead ends: 588 [2022-11-03 01:54:08,015 INFO L226 Difference]: Without dead ends: 331 [2022-11-03 01:54:08,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 317 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 01:54:08,016 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 6 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:08,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1062 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 11 Unchecked, 0.2s Time] [2022-11-03 01:54:08,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-11-03 01:54:08,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2022-11-03 01:54:08,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 1.4) internal successors, (462), 330 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:08,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 462 transitions. [2022-11-03 01:54:08,025 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 462 transitions. Word has length 320 [2022-11-03 01:54:08,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:08,028 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 462 transitions. [2022-11-03 01:54:08,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:08,028 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 462 transitions. [2022-11-03 01:54:08,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:08,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:08,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:08,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:08,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:08,256 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:08,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:08,256 INFO L85 PathProgramCache]: Analyzing trace with hash 425033975, now seen corresponding path program 1 times [2022-11-03 01:54:08,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:08,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237451487] [2022-11-03 01:54:08,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:08,258 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:08,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:08,259 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:08,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-03 01:54:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:09,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 01:54:09,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:09,489 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:09,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:09,490 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:09,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237451487] [2022-11-03 01:54:09,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237451487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:09,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:09,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:54:09,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803337978] [2022-11-03 01:54:09,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:09,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:54:09,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:09,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:54:09,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:54:09,492 INFO L87 Difference]: Start difference. First operand 331 states and 462 transitions. Second operand has 9 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:10,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:10,234 INFO L93 Difference]: Finished difference Result 593 states and 851 transitions. [2022-11-03 01:54:10,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:54:10,235 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:10,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:10,236 INFO L225 Difference]: With dead ends: 593 [2022-11-03 01:54:10,236 INFO L226 Difference]: Without dead ends: 336 [2022-11-03 01:54:10,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:54:10,237 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 112 mSDsluCounter, 2247 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 2617 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:10,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 2617 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 426 Invalid, 0 Unknown, 37 Unchecked, 0.6s Time] [2022-11-03 01:54:10,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-03 01:54:10,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 335. [2022-11-03 01:54:10,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.3952095808383234) internal successors, (466), 334 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:10,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 466 transitions. [2022-11-03 01:54:10,243 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 466 transitions. Word has length 320 [2022-11-03 01:54:10,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:10,243 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 466 transitions. [2022-11-03 01:54:10,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:10,244 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 466 transitions. [2022-11-03 01:54:10,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:10,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:10,246 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:10,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-11-03 01:54:10,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:10,455 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:10,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:10,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1577077767, now seen corresponding path program 1 times [2022-11-03 01:54:10,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:10,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016394172] [2022-11-03 01:54:10,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:10,457 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:10,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:10,458 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:10,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 01:54:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:11,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 01:54:11,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:11,610 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:11,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:11,610 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:11,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016394172] [2022-11-03 01:54:11,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016394172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:11,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:11,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:54:11,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576840735] [2022-11-03 01:54:11,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:11,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:54:11,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:11,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:54:11,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:54:11,613 INFO L87 Difference]: Start difference. First operand 335 states and 466 transitions. Second operand has 9 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:12,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:12,358 INFO L93 Difference]: Finished difference Result 595 states and 853 transitions. [2022-11-03 01:54:12,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:54:12,359 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:12,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:12,360 INFO L225 Difference]: With dead ends: 595 [2022-11-03 01:54:12,360 INFO L226 Difference]: Without dead ends: 338 [2022-11-03 01:54:12,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:54:12,361 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 112 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 2619 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:12,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 2619 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 426 Invalid, 0 Unknown, 38 Unchecked, 0.6s Time] [2022-11-03 01:54:12,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-11-03 01:54:12,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 337. [2022-11-03 01:54:12,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.3928571428571428) internal successors, (468), 336 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:12,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 468 transitions. [2022-11-03 01:54:12,367 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 468 transitions. Word has length 320 [2022-11-03 01:54:12,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:12,368 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 468 transitions. [2022-11-03 01:54:12,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:12,368 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 468 transitions. [2022-11-03 01:54:12,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:12,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:12,370 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:12,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:12,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:12,595 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:12,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:12,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1044299643, now seen corresponding path program 1 times [2022-11-03 01:54:12,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:12,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890887958] [2022-11-03 01:54:12,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:12,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:12,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:12,599 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:12,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-03 01:54:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:13,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 01:54:13,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:13,687 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:13,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:13,687 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:13,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890887958] [2022-11-03 01:54:13,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890887958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:13,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:13,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:54:13,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113328409] [2022-11-03 01:54:13,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:13,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:54:13,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:13,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:54:13,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:54:13,690 INFO L87 Difference]: Start difference. First operand 337 states and 468 transitions. Second operand has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:13,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:13,945 INFO L93 Difference]: Finished difference Result 602 states and 863 transitions. [2022-11-03 01:54:13,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:54:13,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:13,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:13,947 INFO L225 Difference]: With dead ends: 602 [2022-11-03 01:54:13,947 INFO L226 Difference]: Without dead ends: 345 [2022-11-03 01:54:13,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:54:13,948 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 16 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:13,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1439 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 22 Unchecked, 0.2s Time] [2022-11-03 01:54:13,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-11-03 01:54:13,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2022-11-03 01:54:13,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.3924418604651163) internal successors, (479), 344 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:13,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 479 transitions. [2022-11-03 01:54:13,954 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 479 transitions. Word has length 320 [2022-11-03 01:54:13,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:13,955 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 479 transitions. [2022-11-03 01:54:13,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:13,955 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 479 transitions. [2022-11-03 01:54:13,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:13,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:13,957 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:13,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:14,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:14,157 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:14,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:14,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1396956157, now seen corresponding path program 1 times [2022-11-03 01:54:14,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:14,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194461976] [2022-11-03 01:54:14,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:14,160 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:14,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:14,161 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:14,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-03 01:54:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:15,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 01:54:15,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:15,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:15,445 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:15,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194461976] [2022-11-03 01:54:15,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194461976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:15,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:15,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:54:15,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8708329] [2022-11-03 01:54:15,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:15,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:54:15,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:15,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:54:15,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:54:15,448 INFO L87 Difference]: Start difference. First operand 345 states and 479 transitions. Second operand has 9 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:16,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:16,142 INFO L93 Difference]: Finished difference Result 608 states and 870 transitions. [2022-11-03 01:54:16,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:54:16,143 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:16,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:16,145 INFO L225 Difference]: With dead ends: 608 [2022-11-03 01:54:16,145 INFO L226 Difference]: Without dead ends: 351 [2022-11-03 01:54:16,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:54:16,146 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 113 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 2614 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:16,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 2614 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 426 Invalid, 0 Unknown, 37 Unchecked, 0.6s Time] [2022-11-03 01:54:16,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-11-03 01:54:16,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2022-11-03 01:54:16,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.3885714285714286) internal successors, (486), 350 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 01:54:16,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 486 transitions. [2022-11-03 01:54:16,152 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 486 transitions. Word has length 320 [2022-11-03 01:54:16,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:16,153 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 486 transitions. [2022-11-03 01:54:16,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:16,153 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 486 transitions. [2022-11-03 01:54:16,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:16,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:16,155 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:16,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-11-03 01:54:16,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:16,371 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:16,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:16,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1601556225, now seen corresponding path program 1 times [2022-11-03 01:54:16,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:16,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428164347] [2022-11-03 01:54:16,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:16,373 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:16,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:16,373 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:16,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-03 01:54:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:17,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:54:17,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:17,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:17,380 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:17,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428164347] [2022-11-03 01:54:17,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428164347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:17,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:17,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:54:17,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072960797] [2022-11-03 01:54:17,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:17,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:54:17,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:17,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:54:17,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:54:17,382 INFO L87 Difference]: Start difference. First operand 351 states and 486 transitions. Second operand has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:17,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:17,497 INFO L93 Difference]: Finished difference Result 868 states and 1256 transitions. [2022-11-03 01:54:17,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:54:17,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:17,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:17,500 INFO L225 Difference]: With dead ends: 868 [2022-11-03 01:54:17,500 INFO L226 Difference]: Without dead ends: 611 [2022-11-03 01:54:17,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 316 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 01:54:17,501 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 1026 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:17,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1595 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:54:17,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-11-03 01:54:17,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 355. [2022-11-03 01:54:17,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.387005649717514) internal successors, (491), 354 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:17,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 491 transitions. [2022-11-03 01:54:17,509 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 491 transitions. Word has length 320 [2022-11-03 01:54:17,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:17,510 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 491 transitions. [2022-11-03 01:54:17,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:17,510 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 491 transitions. [2022-11-03 01:54:17,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:17,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:17,512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:17,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:17,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:17,735 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:17,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:17,735 INFO L85 PathProgramCache]: Analyzing trace with hash -485588099, now seen corresponding path program 1 times [2022-11-03 01:54:17,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:17,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954503855] [2022-11-03 01:54:17,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:17,737 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:17,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:17,738 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:17,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-03 01:54:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:18,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 01:54:18,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:18,813 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:18,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:18,813 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:18,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954503855] [2022-11-03 01:54:18,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954503855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:18,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:18,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:54:18,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356815233] [2022-11-03 01:54:18,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:18,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:54:18,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:18,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:54:18,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:54:18,816 INFO L87 Difference]: Start difference. First operand 355 states and 491 transitions. Second operand has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:19,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:19,045 INFO L93 Difference]: Finished difference Result 614 states and 877 transitions. [2022-11-03 01:54:19,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:54:19,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:19,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:19,047 INFO L225 Difference]: With dead ends: 614 [2022-11-03 01:54:19,047 INFO L226 Difference]: Without dead ends: 357 [2022-11-03 01:54:19,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:54:19,048 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 12 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:19,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1440 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 22 Unchecked, 0.2s Time] [2022-11-03 01:54:19,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-11-03 01:54:19,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2022-11-03 01:54:19,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.3848314606741574) internal successors, (493), 356 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:19,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 493 transitions. [2022-11-03 01:54:19,052 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 493 transitions. Word has length 320 [2022-11-03 01:54:19,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:19,053 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 493 transitions. [2022-11-03 01:54:19,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:19,053 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 493 transitions. [2022-11-03 01:54:19,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:19,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:19,055 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:19,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:19,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:19,279 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:19,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:19,280 INFO L85 PathProgramCache]: Analyzing trace with hash -147084929, now seen corresponding path program 1 times [2022-11-03 01:54:19,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:19,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343882755] [2022-11-03 01:54:19,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:19,282 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:19,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:19,284 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:19,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-03 01:54:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:20,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:54:20,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:20,212 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:20,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:20,212 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:20,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343882755] [2022-11-03 01:54:20,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343882755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:20,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:20,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:54:20,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024048339] [2022-11-03 01:54:20,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:20,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:54:20,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:20,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:54:20,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:54:20,215 INFO L87 Difference]: Start difference. First operand 357 states and 493 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:20,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:20,579 INFO L93 Difference]: Finished difference Result 1108 states and 1609 transitions. [2022-11-03 01:54:20,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:54:20,580 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:20,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:20,582 INFO L225 Difference]: With dead ends: 1108 [2022-11-03 01:54:20,582 INFO L226 Difference]: Without dead ends: 851 [2022-11-03 01:54:20,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 314 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 01:54:20,583 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 1095 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 2914 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:20,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 2914 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 48 Unchecked, 0.3s Time] [2022-11-03 01:54:20,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-03 01:54:20,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 363. [2022-11-03 01:54:20,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.3784530386740332) internal successors, (499), 362 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:20,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 499 transitions. [2022-11-03 01:54:20,598 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 499 transitions. Word has length 320 [2022-11-03 01:54:20,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:20,598 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 499 transitions. [2022-11-03 01:54:20,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:20,598 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 499 transitions. [2022-11-03 01:54:20,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:20,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:20,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:20,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:20,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:20,817 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:20,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:20,818 INFO L85 PathProgramCache]: Analyzing trace with hash -115447807, now seen corresponding path program 1 times [2022-11-03 01:54:20,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:20,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325943553] [2022-11-03 01:54:20,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:20,820 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:20,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:20,821 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:20,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-03 01:54:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:21,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:54:21,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:21,826 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:21,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:21,826 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:21,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325943553] [2022-11-03 01:54:21,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325943553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:21,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:21,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:54:21,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703359891] [2022-11-03 01:54:21,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:21,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:54:21,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:21,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:54:21,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:54:21,829 INFO L87 Difference]: Start difference. First operand 363 states and 499 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:22,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:22,140 INFO L93 Difference]: Finished difference Result 1108 states and 1608 transitions. [2022-11-03 01:54:22,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:54:22,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:22,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:22,142 INFO L225 Difference]: With dead ends: 1108 [2022-11-03 01:54:22,142 INFO L226 Difference]: Without dead ends: 851 [2022-11-03 01:54:22,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 314 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 01:54:22,143 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 1435 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 2213 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:22,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1435 Valid, 2213 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 66 Unchecked, 0.3s Time] [2022-11-03 01:54:22,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-03 01:54:22,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 365. [2022-11-03 01:54:22,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.3763736263736264) internal successors, (501), 364 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:22,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 501 transitions. [2022-11-03 01:54:22,152 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 501 transitions. Word has length 320 [2022-11-03 01:54:22,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:22,152 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 501 transitions. [2022-11-03 01:54:22,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:22,153 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 501 transitions. [2022-11-03 01:54:22,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:22,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:22,155 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:22,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-03 01:54:22,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:22,359 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:22,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:22,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1304240381, now seen corresponding path program 1 times [2022-11-03 01:54:22,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:22,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [666148130] [2022-11-03 01:54:22,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:22,361 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:22,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:22,362 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:22,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-03 01:54:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:23,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:54:23,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:23,318 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:23,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:23,318 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:23,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [666148130] [2022-11-03 01:54:23,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [666148130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:23,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:23,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:54:23,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315081716] [2022-11-03 01:54:23,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:23,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:54:23,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:23,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:54:23,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:54:23,321 INFO L87 Difference]: Start difference. First operand 365 states and 501 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:23,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:23,652 INFO L93 Difference]: Finished difference Result 1108 states and 1607 transitions. [2022-11-03 01:54:23,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:54:23,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:23,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:23,655 INFO L225 Difference]: With dead ends: 1108 [2022-11-03 01:54:23,655 INFO L226 Difference]: Without dead ends: 851 [2022-11-03 01:54:23,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 314 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 01:54:23,657 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 1428 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 2217 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:23,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 2217 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 66 Unchecked, 0.3s Time] [2022-11-03 01:54:23,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-03 01:54:23,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 367. [2022-11-03 01:54:23,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.3743169398907105) internal successors, (503), 366 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:23,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 503 transitions. [2022-11-03 01:54:23,665 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 503 transitions. Word has length 320 [2022-11-03 01:54:23,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:23,666 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 503 transitions. [2022-11-03 01:54:23,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:23,666 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 503 transitions. [2022-11-03 01:54:23,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:23,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:23,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:23,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:23,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:23,887 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:23,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:23,887 INFO L85 PathProgramCache]: Analyzing trace with hash 549269125, now seen corresponding path program 1 times [2022-11-03 01:54:23,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:23,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991356549] [2022-11-03 01:54:23,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:23,889 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:23,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:23,890 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:23,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-03 01:54:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:24,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:54:24,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:24,801 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:24,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:24,801 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:24,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991356549] [2022-11-03 01:54:24,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991356549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:24,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:24,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:54:24,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354369354] [2022-11-03 01:54:24,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:24,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:54:24,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:24,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:54:24,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:54:24,803 INFO L87 Difference]: Start difference. First operand 367 states and 503 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:25,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:25,108 INFO L93 Difference]: Finished difference Result 1108 states and 1606 transitions. [2022-11-03 01:54:25,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:54:25,109 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:25,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:25,110 INFO L225 Difference]: With dead ends: 1108 [2022-11-03 01:54:25,110 INFO L226 Difference]: Without dead ends: 851 [2022-11-03 01:54:25,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 314 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 01:54:25,111 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 1421 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:25,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 2219 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 55 Unchecked, 0.3s Time] [2022-11-03 01:54:25,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-03 01:54:25,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 369. [2022-11-03 01:54:25,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 1.372282608695652) internal successors, (505), 368 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:25,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 505 transitions. [2022-11-03 01:54:25,120 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 505 transitions. Word has length 320 [2022-11-03 01:54:25,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:25,121 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 505 transitions. [2022-11-03 01:54:25,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:25,121 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 505 transitions. [2022-11-03 01:54:25,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:25,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:25,123 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:25,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:25,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:25,331 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:25,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:25,331 INFO L85 PathProgramCache]: Analyzing trace with hash -114723193, now seen corresponding path program 1 times [2022-11-03 01:54:25,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:25,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566407254] [2022-11-03 01:54:25,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:25,333 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:25,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:25,334 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:25,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-03 01:54:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:26,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:54:26,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:26,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:26,265 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:26,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566407254] [2022-11-03 01:54:26,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566407254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:26,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:26,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:54:26,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625528310] [2022-11-03 01:54:26,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:26,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:54:26,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:26,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:54:26,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:54:26,267 INFO L87 Difference]: Start difference. First operand 369 states and 505 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:26,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:26,596 INFO L93 Difference]: Finished difference Result 1108 states and 1605 transitions. [2022-11-03 01:54:26,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:54:26,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:26,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:26,598 INFO L225 Difference]: With dead ends: 1108 [2022-11-03 01:54:26,598 INFO L226 Difference]: Without dead ends: 851 [2022-11-03 01:54:26,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 314 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 01:54:26,599 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 1075 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:26,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 3037 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 173 Invalid, 0 Unknown, 104 Unchecked, 0.3s Time] [2022-11-03 01:54:26,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-03 01:54:26,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 371. [2022-11-03 01:54:26,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.3702702702702703) internal successors, (507), 370 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:26,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 507 transitions. [2022-11-03 01:54:26,604 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 507 transitions. Word has length 320 [2022-11-03 01:54:26,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:26,604 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 507 transitions. [2022-11-03 01:54:26,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:26,604 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 507 transitions. [2022-11-03 01:54:26,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:26,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:26,605 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:26,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-11-03 01:54:26,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:26,806 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:26,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:26,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1465133303, now seen corresponding path program 1 times [2022-11-03 01:54:26,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:26,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349573896] [2022-11-03 01:54:26,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:26,808 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:26,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:26,809 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:26,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-03 01:54:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:27,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:54:27,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:27,781 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:27,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:27,782 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:27,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1349573896] [2022-11-03 01:54:27,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1349573896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:27,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:27,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:54:27,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839475555] [2022-11-03 01:54:27,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:27,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:54:27,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:27,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:54:27,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:54:27,787 INFO L87 Difference]: Start difference. First operand 371 states and 507 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:28,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:28,140 INFO L93 Difference]: Finished difference Result 1108 states and 1604 transitions. [2022-11-03 01:54:28,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:54:28,141 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:28,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:28,142 INFO L225 Difference]: With dead ends: 1108 [2022-11-03 01:54:28,142 INFO L226 Difference]: Without dead ends: 851 [2022-11-03 01:54:28,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 314 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 01:54:28,143 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 1075 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:28,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 2929 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 50 Unchecked, 0.3s Time] [2022-11-03 01:54:28,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-03 01:54:28,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 373. [2022-11-03 01:54:28,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 1.368279569892473) internal successors, (509), 372 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:28,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 509 transitions. [2022-11-03 01:54:28,154 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 509 transitions. Word has length 320 [2022-11-03 01:54:28,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:28,154 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 509 transitions. [2022-11-03 01:54:28,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:28,155 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 509 transitions. [2022-11-03 01:54:28,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:28,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:28,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:28,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:28,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:28,375 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:28,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:28,375 INFO L85 PathProgramCache]: Analyzing trace with hash -688885749, now seen corresponding path program 1 times [2022-11-03 01:54:28,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:28,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231531982] [2022-11-03 01:54:28,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:28,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:28,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:28,378 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:28,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-03 01:54:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:29,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:54:29,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:29,305 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:29,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:29,306 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:29,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231531982] [2022-11-03 01:54:29,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231531982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:29,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:29,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:54:29,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532662032] [2022-11-03 01:54:29,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:29,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:54:29,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:29,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:54:29,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:54:29,308 INFO L87 Difference]: Start difference. First operand 373 states and 509 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:29,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:29,668 INFO L93 Difference]: Finished difference Result 1108 states and 1603 transitions. [2022-11-03 01:54:29,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:54:29,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:29,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:29,670 INFO L225 Difference]: With dead ends: 1108 [2022-11-03 01:54:29,670 INFO L226 Difference]: Without dead ends: 851 [2022-11-03 01:54:29,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 314 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 01:54:29,671 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 1071 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 2934 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:29,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 2934 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 66 Unchecked, 0.3s Time] [2022-11-03 01:54:29,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-03 01:54:29,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 375. [2022-11-03 01:54:29,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 1.3663101604278074) internal successors, (511), 374 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:29,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 511 transitions. [2022-11-03 01:54:29,679 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 511 transitions. Word has length 320 [2022-11-03 01:54:29,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:29,679 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 511 transitions. [2022-11-03 01:54:29,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:29,679 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 511 transitions. [2022-11-03 01:54:29,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:29,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:29,681 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:29,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:29,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:29,881 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:29,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:29,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1747673485, now seen corresponding path program 1 times [2022-11-03 01:54:29,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:29,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777979015] [2022-11-03 01:54:29,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:29,883 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:29,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:29,884 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:29,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-03 01:54:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:30,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:54:30,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:30,857 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:30,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:30,858 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:30,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777979015] [2022-11-03 01:54:30,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777979015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:30,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:30,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:54:30,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239790845] [2022-11-03 01:54:30,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:30,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:54:30,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:30,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:54:30,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:54:30,860 INFO L87 Difference]: Start difference. First operand 375 states and 511 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:31,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:31,184 INFO L93 Difference]: Finished difference Result 1108 states and 1602 transitions. [2022-11-03 01:54:31,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:54:31,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:31,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:31,186 INFO L225 Difference]: With dead ends: 1108 [2022-11-03 01:54:31,186 INFO L226 Difference]: Without dead ends: 851 [2022-11-03 01:54:31,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 314 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 01:54:31,187 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 1388 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:31,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1388 Valid, 2234 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 50 Unchecked, 0.3s Time] [2022-11-03 01:54:31,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-03 01:54:31,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 379. [2022-11-03 01:54:31,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 1.3650793650793651) internal successors, (516), 378 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:31,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 516 transitions. [2022-11-03 01:54:31,196 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 516 transitions. Word has length 320 [2022-11-03 01:54:31,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:31,196 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 516 transitions. [2022-11-03 01:54:31,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:31,197 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 516 transitions. [2022-11-03 01:54:31,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:31,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:31,199 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:31,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2022-11-03 01:54:31,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:31,411 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:31,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:31,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1745839119, now seen corresponding path program 1 times [2022-11-03 01:54:31,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:31,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118923073] [2022-11-03 01:54:31,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:31,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:31,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:31,415 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:31,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-03 01:54:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:32,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:54:32,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:32,403 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:32,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:32,404 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:32,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118923073] [2022-11-03 01:54:32,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118923073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:32,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:32,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:54:32,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127406317] [2022-11-03 01:54:32,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:32,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:54:32,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:32,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:54:32,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:54:32,406 INFO L87 Difference]: Start difference. First operand 379 states and 516 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:32,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:32,723 INFO L93 Difference]: Finished difference Result 1108 states and 1601 transitions. [2022-11-03 01:54:32,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:54:32,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:32,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:32,725 INFO L225 Difference]: With dead ends: 1108 [2022-11-03 01:54:32,725 INFO L226 Difference]: Without dead ends: 851 [2022-11-03 01:54:32,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 314 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 01:54:32,726 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1381 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 2246 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:32,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 2246 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 67 Unchecked, 0.3s Time] [2022-11-03 01:54:32,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-03 01:54:32,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 381. [2022-11-03 01:54:32,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 1.3631578947368421) internal successors, (518), 380 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:32,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 518 transitions. [2022-11-03 01:54:32,735 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 518 transitions. Word has length 320 [2022-11-03 01:54:32,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:32,735 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 518 transitions. [2022-11-03 01:54:32,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:32,735 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 518 transitions. [2022-11-03 01:54:32,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:32,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:32,737 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:32,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2022-11-03 01:54:32,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:32,947 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:32,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:32,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1991646993, now seen corresponding path program 1 times [2022-11-03 01:54:32,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:32,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610773854] [2022-11-03 01:54:32,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:32,949 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:32,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:32,949 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:32,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-03 01:54:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:33,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:54:33,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:33,884 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:33,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:33,885 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:33,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610773854] [2022-11-03 01:54:33,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [610773854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:33,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:33,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:54:33,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726013836] [2022-11-03 01:54:33,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:33,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:54:33,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:33,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:54:33,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:54:33,886 INFO L87 Difference]: Start difference. First operand 381 states and 518 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:34,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:34,233 INFO L93 Difference]: Finished difference Result 1108 states and 1600 transitions. [2022-11-03 01:54:34,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:54:34,233 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:34,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:34,234 INFO L225 Difference]: With dead ends: 1108 [2022-11-03 01:54:34,234 INFO L226 Difference]: Without dead ends: 851 [2022-11-03 01:54:34,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 314 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 01:54:34,235 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1056 mSDsluCounter, 2602 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:34,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1056 Valid, 3085 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 96 Unchecked, 0.3s Time] [2022-11-03 01:54:34,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-03 01:54:34,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 383. [2022-11-03 01:54:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.361256544502618) internal successors, (520), 382 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:34,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 520 transitions. [2022-11-03 01:54:34,243 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 520 transitions. Word has length 320 [2022-11-03 01:54:34,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:34,244 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 520 transitions. [2022-11-03 01:54:34,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:34,244 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 520 transitions. [2022-11-03 01:54:34,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:34,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:34,246 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:34,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-11-03 01:54:34,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:34,451 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:34,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:34,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2121511571, now seen corresponding path program 1 times [2022-11-03 01:54:34,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:34,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932774504] [2022-11-03 01:54:34,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:34,453 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:34,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:34,453 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:34,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-03 01:54:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:35,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:54:35,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:35,438 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:35,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:35,439 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:35,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932774504] [2022-11-03 01:54:35,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932774504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:35,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:35,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:54:35,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434811207] [2022-11-03 01:54:35,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:35,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:54:35,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:35,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:54:35,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:54:35,441 INFO L87 Difference]: Start difference. First operand 383 states and 520 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:35,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:35,754 INFO L93 Difference]: Finished difference Result 1108 states and 1599 transitions. [2022-11-03 01:54:35,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:54:35,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:35,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:35,756 INFO L225 Difference]: With dead ends: 1108 [2022-11-03 01:54:35,756 INFO L226 Difference]: Without dead ends: 851 [2022-11-03 01:54:35,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 314 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 01:54:35,757 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 1367 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 2384 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:35,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1367 Valid, 2384 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 113 Unchecked, 0.3s Time] [2022-11-03 01:54:35,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-03 01:54:35,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 385. [2022-11-03 01:54:35,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.359375) internal successors, (522), 384 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:35,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 522 transitions. [2022-11-03 01:54:35,763 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 522 transitions. Word has length 320 [2022-11-03 01:54:35,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:35,764 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 522 transitions. [2022-11-03 01:54:35,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:35,764 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 522 transitions. [2022-11-03 01:54:35,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:35,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:35,766 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:35,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2022-11-03 01:54:35,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:35,966 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:35,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:35,967 INFO L85 PathProgramCache]: Analyzing trace with hash 807681685, now seen corresponding path program 1 times [2022-11-03 01:54:35,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:35,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703580531] [2022-11-03 01:54:35,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:35,969 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:35,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:35,970 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:35,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-03 01:54:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:36,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:54:36,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:36,957 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:36,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:36,957 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:36,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703580531] [2022-11-03 01:54:36,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703580531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:36,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:36,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:54:36,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951827346] [2022-11-03 01:54:36,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:36,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:54:36,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:36,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:54:36,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:54:36,960 INFO L87 Difference]: Start difference. First operand 385 states and 522 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:37,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:37,277 INFO L93 Difference]: Finished difference Result 1108 states and 1598 transitions. [2022-11-03 01:54:37,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:54:37,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:37,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:37,279 INFO L225 Difference]: With dead ends: 1108 [2022-11-03 01:54:37,279 INFO L226 Difference]: Without dead ends: 851 [2022-11-03 01:54:37,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 314 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 01:54:37,280 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1360 mSDsluCounter, 1902 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:37,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1360 Valid, 2391 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 113 Unchecked, 0.3s Time] [2022-11-03 01:54:37,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-03 01:54:37,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 387. [2022-11-03 01:54:37,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 1.3575129533678756) internal successors, (524), 386 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:37,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 524 transitions. [2022-11-03 01:54:37,289 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 524 transitions. Word has length 320 [2022-11-03 01:54:37,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:37,289 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 524 transitions. [2022-11-03 01:54:37,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:37,290 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 524 transitions. [2022-11-03 01:54:37,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:37,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:37,292 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:37,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:37,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:37,517 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:37,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:37,518 INFO L85 PathProgramCache]: Analyzing trace with hash 86762263, now seen corresponding path program 1 times [2022-11-03 01:54:37,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:37,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354787493] [2022-11-03 01:54:37,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:37,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:37,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:37,523 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:37,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-03 01:54:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:38,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:54:38,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:38,493 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:38,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:38,494 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:38,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354787493] [2022-11-03 01:54:38,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354787493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:38,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:38,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:54:38,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375957184] [2022-11-03 01:54:38,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:38,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:54:38,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:38,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:54:38,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:54:38,495 INFO L87 Difference]: Start difference. First operand 387 states and 524 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:38,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:38,853 INFO L93 Difference]: Finished difference Result 1108 states and 1597 transitions. [2022-11-03 01:54:38,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:54:38,853 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:38,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:38,855 INFO L225 Difference]: With dead ends: 1108 [2022-11-03 01:54:38,855 INFO L226 Difference]: Without dead ends: 851 [2022-11-03 01:54:38,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 314 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 01:54:38,856 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 1044 mSDsluCounter, 2614 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:38,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 3106 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 111 Unchecked, 0.3s Time] [2022-11-03 01:54:38,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-03 01:54:38,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 389. [2022-11-03 01:54:38,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 1.3556701030927836) internal successors, (526), 388 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:38,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 526 transitions. [2022-11-03 01:54:38,865 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 526 transitions. Word has length 320 [2022-11-03 01:54:38,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:38,865 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 526 transitions. [2022-11-03 01:54:38,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:38,866 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 526 transitions. [2022-11-03 01:54:38,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:38,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:38,868 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:38,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Ended with exit code 0 [2022-11-03 01:54:39,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:39,075 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:39,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:39,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1049182183, now seen corresponding path program 1 times [2022-11-03 01:54:39,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:39,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932013335] [2022-11-03 01:54:39,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:39,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:39,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:39,077 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:39,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-03 01:54:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:39,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:54:39,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:40,051 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:40,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:40,051 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:40,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932013335] [2022-11-03 01:54:40,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932013335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:40,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:40,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:54:40,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813155122] [2022-11-03 01:54:40,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:40,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:54:40,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:40,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:54:40,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:54:40,054 INFO L87 Difference]: Start difference. First operand 389 states and 526 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:40,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:40,405 INFO L93 Difference]: Finished difference Result 1108 states and 1596 transitions. [2022-11-03 01:54:40,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:54:40,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:40,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:40,407 INFO L225 Difference]: With dead ends: 1108 [2022-11-03 01:54:40,407 INFO L226 Difference]: Without dead ends: 851 [2022-11-03 01:54:40,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 314 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 01:54:40,408 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 1037 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 3118 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:40,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 3118 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 188 Invalid, 0 Unknown, 109 Unchecked, 0.3s Time] [2022-11-03 01:54:40,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-03 01:54:40,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 393. [2022-11-03 01:54:40,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 1.3545918367346939) internal successors, (531), 392 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:40,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 531 transitions. [2022-11-03 01:54:40,415 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 531 transitions. Word has length 320 [2022-11-03 01:54:40,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:40,415 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 531 transitions. [2022-11-03 01:54:40,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:40,416 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 531 transitions. [2022-11-03 01:54:40,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:40,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:40,418 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:40,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:40,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:40,631 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:40,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:40,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1277980187, now seen corresponding path program 1 times [2022-11-03 01:54:40,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:40,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030094358] [2022-11-03 01:54:40,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:40,633 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:40,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:40,634 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:40,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-03 01:54:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:41,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:54:41,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:41,578 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:41,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:41,579 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:41,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030094358] [2022-11-03 01:54:41,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030094358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:41,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:41,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:54:41,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203407264] [2022-11-03 01:54:41,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:41,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:54:41,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:41,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:54:41,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:54:41,581 INFO L87 Difference]: Start difference. First operand 393 states and 531 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:41,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:41,880 INFO L93 Difference]: Finished difference Result 908 states and 1298 transitions. [2022-11-03 01:54:41,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:54:41,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:41,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:41,881 INFO L225 Difference]: With dead ends: 908 [2022-11-03 01:54:41,881 INFO L226 Difference]: Without dead ends: 651 [2022-11-03 01:54:41,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 314 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 01:54:41,883 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 425 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 2181 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:41,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 2181 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 37 Unchecked, 0.3s Time] [2022-11-03 01:54:41,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-11-03 01:54:41,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 395. [2022-11-03 01:54:41,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.3527918781725887) internal successors, (533), 394 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:41,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 533 transitions. [2022-11-03 01:54:41,889 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 533 transitions. Word has length 320 [2022-11-03 01:54:41,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:41,890 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 533 transitions. [2022-11-03 01:54:41,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:41,890 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 533 transitions. [2022-11-03 01:54:41,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:41,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:41,892 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:41,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2022-11-03 01:54:42,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:42,115 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:42,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:42,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1561965725, now seen corresponding path program 1 times [2022-11-03 01:54:42,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:42,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954631697] [2022-11-03 01:54:42,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:42,117 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:42,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:42,118 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:42,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-03 01:54:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:42,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 01:54:42,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:43,458 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:43,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:43,459 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:43,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954631697] [2022-11-03 01:54:43,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954631697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:43,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:43,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:54:43,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884909290] [2022-11-03 01:54:43,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:43,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:54:43,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:43,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:54:43,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:54:43,460 INFO L87 Difference]: Start difference. First operand 395 states and 533 transitions. Second operand has 9 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:44,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:44,146 INFO L93 Difference]: Finished difference Result 654 states and 919 transitions. [2022-11-03 01:54:44,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:54:44,147 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:44,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:44,147 INFO L225 Difference]: With dead ends: 654 [2022-11-03 01:54:44,147 INFO L226 Difference]: Without dead ends: 397 [2022-11-03 01:54:44,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:54:44,148 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 115 mSDsluCounter, 2239 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:44,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 2606 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 426 Invalid, 0 Unknown, 63 Unchecked, 0.6s Time] [2022-11-03 01:54:44,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-11-03 01:54:44,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2022-11-03 01:54:44,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 1.351010101010101) internal successors, (535), 396 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:44,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 535 transitions. [2022-11-03 01:54:44,154 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 535 transitions. Word has length 320 [2022-11-03 01:54:44,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:44,154 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 535 transitions. [2022-11-03 01:54:44,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:44,154 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 535 transitions. [2022-11-03 01:54:44,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:44,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:44,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:44,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2022-11-03 01:54:44,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:44,356 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:44,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:44,357 INFO L85 PathProgramCache]: Analyzing trace with hash -162876513, now seen corresponding path program 1 times [2022-11-03 01:54:44,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:44,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896651394] [2022-11-03 01:54:44,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:44,359 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:44,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:44,360 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:44,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-03 01:54:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:45,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 01:54:45,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:45,762 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:45,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:45,762 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:45,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896651394] [2022-11-03 01:54:45,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896651394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:45,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:45,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:54:45,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578476840] [2022-11-03 01:54:45,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:45,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:54:45,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:45,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:54:45,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:54:45,764 INFO L87 Difference]: Start difference. First operand 397 states and 535 transitions. Second operand has 9 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:46,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:46,450 INFO L93 Difference]: Finished difference Result 656 states and 921 transitions. [2022-11-03 01:54:46,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:54:46,451 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:46,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:46,452 INFO L225 Difference]: With dead ends: 656 [2022-11-03 01:54:46,452 INFO L226 Difference]: Without dead ends: 399 [2022-11-03 01:54:46,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:54:46,453 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 115 mSDsluCounter, 2214 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 2580 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:46,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 2580 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 395 Invalid, 0 Unknown, 63 Unchecked, 0.6s Time] [2022-11-03 01:54:46,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-11-03 01:54:46,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2022-11-03 01:54:46,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.349246231155779) internal successors, (537), 398 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:46,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 537 transitions. [2022-11-03 01:54:46,459 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 537 transitions. Word has length 320 [2022-11-03 01:54:46,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:46,460 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 537 transitions. [2022-11-03 01:54:46,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:46,460 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 537 transitions. [2022-11-03 01:54:46,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:46,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:46,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:46,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2022-11-03 01:54:46,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:46,667 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:46,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:46,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1850968865, now seen corresponding path program 1 times [2022-11-03 01:54:46,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:46,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695898931] [2022-11-03 01:54:46,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:46,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:46,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:46,670 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:46,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-03 01:54:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:47,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 01:54:47,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:48,049 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:48,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:48,049 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:48,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695898931] [2022-11-03 01:54:48,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695898931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:48,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:48,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:54:48,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393323221] [2022-11-03 01:54:48,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:48,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:54:48,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:48,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:54:48,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:54:48,052 INFO L87 Difference]: Start difference. First operand 399 states and 537 transitions. Second operand has 9 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:48,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:48,719 INFO L93 Difference]: Finished difference Result 658 states and 923 transitions. [2022-11-03 01:54:48,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:54:48,720 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:48,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:48,720 INFO L225 Difference]: With dead ends: 658 [2022-11-03 01:54:48,721 INFO L226 Difference]: Without dead ends: 401 [2022-11-03 01:54:48,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:54:48,721 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 115 mSDsluCounter, 2238 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:48,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 2603 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 416 Invalid, 0 Unknown, 64 Unchecked, 0.6s Time] [2022-11-03 01:54:48,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-11-03 01:54:48,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2022-11-03 01:54:48,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 1.3475) internal successors, (539), 400 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:48,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 539 transitions. [2022-11-03 01:54:48,726 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 539 transitions. Word has length 320 [2022-11-03 01:54:48,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:48,726 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 539 transitions. [2022-11-03 01:54:48,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:48,726 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 539 transitions. [2022-11-03 01:54:48,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:48,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:48,728 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:48,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:48,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:48,943 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:48,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:48,943 INFO L85 PathProgramCache]: Analyzing trace with hash -229614813, now seen corresponding path program 1 times [2022-11-03 01:54:48,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:48,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062464819] [2022-11-03 01:54:48,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:48,945 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:48,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:48,946 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:48,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-03 01:54:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:49,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:54:49,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:50,122 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:50,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:50,123 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:50,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062464819] [2022-11-03 01:54:50,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062464819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:50,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:50,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:54:50,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136714371] [2022-11-03 01:54:50,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:50,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:54:50,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:50,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:54:50,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:54:50,125 INFO L87 Difference]: Start difference. First operand 401 states and 539 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:50,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:50,817 INFO L93 Difference]: Finished difference Result 1213 states and 1747 transitions. [2022-11-03 01:54:50,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:54:50,818 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:50,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:50,819 INFO L225 Difference]: With dead ends: 1213 [2022-11-03 01:54:50,819 INFO L226 Difference]: Without dead ends: 956 [2022-11-03 01:54:50,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:54:50,820 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 2383 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2383 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:50,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2383 Valid, 2234 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 01:54:50,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2022-11-03 01:54:50,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 405. [2022-11-03 01:54:50,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 1.3465346534653466) internal successors, (544), 404 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:50,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 544 transitions. [2022-11-03 01:54:50,828 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 544 transitions. Word has length 320 [2022-11-03 01:54:50,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:50,829 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 544 transitions. [2022-11-03 01:54:50,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:50,829 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 544 transitions. [2022-11-03 01:54:50,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:50,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:50,831 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:50,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:51,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:51,035 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:51,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:51,035 INFO L85 PathProgramCache]: Analyzing trace with hash -2015018075, now seen corresponding path program 1 times [2022-11-03 01:54:51,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:51,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643752502] [2022-11-03 01:54:51,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:51,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:51,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:51,037 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:51,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-03 01:54:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:51,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:54:51,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:52,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:52,233 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:52,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643752502] [2022-11-03 01:54:52,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643752502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:52,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:52,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:54:52,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312981176] [2022-11-03 01:54:52,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:52,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:54:52,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:52,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:54:52,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:54:52,235 INFO L87 Difference]: Start difference. First operand 405 states and 544 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:52,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:52,927 INFO L93 Difference]: Finished difference Result 1219 states and 1753 transitions. [2022-11-03 01:54:52,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:54:52,928 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:52,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:52,929 INFO L225 Difference]: With dead ends: 1219 [2022-11-03 01:54:52,929 INFO L226 Difference]: Without dead ends: 958 [2022-11-03 01:54:52,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:54:52,930 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 2375 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2375 SdHoareTripleChecker+Valid, 2247 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:52,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2375 Valid, 2247 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 01:54:52,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2022-11-03 01:54:52,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 407. [2022-11-03 01:54:52,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.3448275862068966) internal successors, (546), 406 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:52,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 546 transitions. [2022-11-03 01:54:52,940 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 546 transitions. Word has length 320 [2022-11-03 01:54:52,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:52,940 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 546 transitions. [2022-11-03 01:54:52,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:52,941 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 546 transitions. [2022-11-03 01:54:52,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:52,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:52,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:52,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2022-11-03 01:54:53,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:53,143 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:53,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:53,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1891736409, now seen corresponding path program 1 times [2022-11-03 01:54:53,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:53,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114409945] [2022-11-03 01:54:53,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:53,145 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:53,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:53,146 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:53,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-03 01:54:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:53,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:54:53,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:54,351 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:54,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:54,351 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:54,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114409945] [2022-11-03 01:54:54,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114409945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:54,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:54,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:54:54,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99121352] [2022-11-03 01:54:54,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:54,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:54:54,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:54,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:54:54,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:54:54,353 INFO L87 Difference]: Start difference. First operand 407 states and 546 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:55,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:55,035 INFO L93 Difference]: Finished difference Result 1223 states and 1756 transitions. [2022-11-03 01:54:55,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:54:55,036 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:55,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:55,037 INFO L225 Difference]: With dead ends: 1223 [2022-11-03 01:54:55,038 INFO L226 Difference]: Without dead ends: 960 [2022-11-03 01:54:55,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:54:55,039 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 2367 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2367 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:55,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2367 Valid, 2253 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 01:54:55,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2022-11-03 01:54:55,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 409. [2022-11-03 01:54:55,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 1.3431372549019607) internal successors, (548), 408 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:55,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 548 transitions. [2022-11-03 01:54:55,048 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 548 transitions. Word has length 320 [2022-11-03 01:54:55,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:55,049 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 548 transitions. [2022-11-03 01:54:55,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:55,049 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 548 transitions. [2022-11-03 01:54:55,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:55,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:55,051 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:55,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:55,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:55,273 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:55,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:55,274 INFO L85 PathProgramCache]: Analyzing trace with hash -988815831, now seen corresponding path program 1 times [2022-11-03 01:54:55,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:55,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027193040] [2022-11-03 01:54:55,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:55,276 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:55,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:55,279 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:55,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-03 01:54:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:56,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:54:56,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:56,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:56,488 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:56,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027193040] [2022-11-03 01:54:56,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027193040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:56,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:56,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:54:56,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346412124] [2022-11-03 01:54:56,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:56,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:54:56,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:56,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:54:56,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:54:56,489 INFO L87 Difference]: Start difference. First operand 409 states and 548 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:57,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:57,183 INFO L93 Difference]: Finished difference Result 1229 states and 1762 transitions. [2022-11-03 01:54:57,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:54:57,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:57,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:57,184 INFO L225 Difference]: With dead ends: 1229 [2022-11-03 01:54:57,185 INFO L226 Difference]: Without dead ends: 964 [2022-11-03 01:54:57,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:54:57,185 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 2354 mSDsluCounter, 1800 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2354 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:57,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2354 Valid, 2267 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 01:54:57,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2022-11-03 01:54:57,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 413. [2022-11-03 01:54:57,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.3422330097087378) internal successors, (553), 412 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:57,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 553 transitions. [2022-11-03 01:54:57,193 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 553 transitions. Word has length 320 [2022-11-03 01:54:57,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:57,194 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 553 transitions. [2022-11-03 01:54:57,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:57,194 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 553 transitions. [2022-11-03 01:54:57,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:57,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:57,195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:57,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2022-11-03 01:54:57,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:57,396 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:57,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:57,396 INFO L85 PathProgramCache]: Analyzing trace with hash 168716459, now seen corresponding path program 1 times [2022-11-03 01:54:57,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:57,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920238557] [2022-11-03 01:54:57,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:57,398 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:57,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:57,399 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:57,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-03 01:54:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:58,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:54:58,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:58,635 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:58,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:58,635 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:58,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920238557] [2022-11-03 01:54:58,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920238557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:58,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:58,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:54:58,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124069679] [2022-11-03 01:54:58,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:58,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:54:58,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:58,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:54:58,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:54:58,638 INFO L87 Difference]: Start difference. First operand 413 states and 553 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:59,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:59,563 INFO L93 Difference]: Finished difference Result 1243 states and 1779 transitions. [2022-11-03 01:54:59,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:54:59,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:54:59,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:59,565 INFO L225 Difference]: With dead ends: 1243 [2022-11-03 01:54:59,565 INFO L226 Difference]: Without dead ends: 974 [2022-11-03 01:54:59,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:54:59,567 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 2728 mSDsluCounter, 2558 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2728 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:59,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2728 Valid, 3028 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:54:59,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2022-11-03 01:54:59,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 415. [2022-11-03 01:54:59,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 414 states have (on average 1.3405797101449275) internal successors, (555), 414 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:59,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 555 transitions. [2022-11-03 01:54:59,575 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 555 transitions. Word has length 320 [2022-11-03 01:54:59,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:59,576 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 555 transitions. [2022-11-03 01:54:59,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:54:59,576 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 555 transitions. [2022-11-03 01:54:59,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:54:59,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:59,578 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:59,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:59,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:59,787 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:59,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:59,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1926343597, now seen corresponding path program 1 times [2022-11-03 01:54:59,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:59,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565347358] [2022-11-03 01:54:59,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:59,789 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:59,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:59,790 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:59,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-03 01:55:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:00,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:00,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:00,979 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:00,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:00,979 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:00,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565347358] [2022-11-03 01:55:00,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565347358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:00,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:00,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:55:00,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569626780] [2022-11-03 01:55:00,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:00,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:55:00,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:00,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:55:00,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:55:00,981 INFO L87 Difference]: Start difference. First operand 415 states and 555 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:01,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:01,860 INFO L93 Difference]: Finished difference Result 1251 states and 1787 transitions. [2022-11-03 01:55:01,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:55:01,860 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:01,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:01,862 INFO L225 Difference]: With dead ends: 1251 [2022-11-03 01:55:01,862 INFO L226 Difference]: Without dead ends: 980 [2022-11-03 01:55:01,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:55:01,863 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 2723 mSDsluCounter, 2562 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2723 SdHoareTripleChecker+Valid, 3035 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:01,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2723 Valid, 3035 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:55:01,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2022-11-03 01:55:01,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 417. [2022-11-03 01:55:01,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.3389423076923077) internal successors, (557), 416 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:01,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 557 transitions. [2022-11-03 01:55:01,873 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 557 transitions. Word has length 320 [2022-11-03 01:55:01,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:01,873 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 557 transitions. [2022-11-03 01:55:01,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:01,874 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 557 transitions. [2022-11-03 01:55:01,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:01,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:01,876 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:01,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:02,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:02,089 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:02,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:02,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1110296367, now seen corresponding path program 1 times [2022-11-03 01:55:02,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:02,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94433834] [2022-11-03 01:55:02,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:02,091 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:02,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:02,091 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:02,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2022-11-03 01:55:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:02,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:02,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:03,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:03,299 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:03,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94433834] [2022-11-03 01:55:03,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94433834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:03,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:03,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:55:03,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379080821] [2022-11-03 01:55:03,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:03,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:55:03,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:03,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:55:03,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:55:03,300 INFO L87 Difference]: Start difference. First operand 417 states and 557 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:04,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:04,186 INFO L93 Difference]: Finished difference Result 1259 states and 1795 transitions. [2022-11-03 01:55:04,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:55:04,186 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:04,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:04,188 INFO L225 Difference]: With dead ends: 1259 [2022-11-03 01:55:04,188 INFO L226 Difference]: Without dead ends: 986 [2022-11-03 01:55:04,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:55:04,189 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 2718 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2718 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:04,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2718 Valid, 3042 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:55:04,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2022-11-03 01:55:04,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 419. [2022-11-03 01:55:04,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.3373205741626795) internal successors, (559), 418 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:04,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 559 transitions. [2022-11-03 01:55:04,198 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 559 transitions. Word has length 320 [2022-11-03 01:55:04,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:04,198 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 559 transitions. [2022-11-03 01:55:04,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:04,198 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 559 transitions. [2022-11-03 01:55:04,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:04,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:04,200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:04,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:04,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:04,415 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:04,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:04,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1585521871, now seen corresponding path program 1 times [2022-11-03 01:55:04,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:04,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337432914] [2022-11-03 01:55:04,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:04,417 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:04,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:04,418 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:04,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-03 01:55:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:05,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:05,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:05,730 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:05,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:05,730 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:05,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337432914] [2022-11-03 01:55:05,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337432914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:05,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:05,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:55:05,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142035378] [2022-11-03 01:55:05,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:05,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:55:05,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:05,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:55:05,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:55:05,732 INFO L87 Difference]: Start difference. First operand 419 states and 559 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:06,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:06,456 INFO L93 Difference]: Finished difference Result 1247 states and 1777 transitions. [2022-11-03 01:55:06,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:55:06,456 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:06,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:06,458 INFO L225 Difference]: With dead ends: 1247 [2022-11-03 01:55:06,458 INFO L226 Difference]: Without dead ends: 972 [2022-11-03 01:55:06,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:55:06,458 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 2322 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2322 SdHoareTripleChecker+Valid, 2291 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:06,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2322 Valid, 2291 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 01:55:06,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2022-11-03 01:55:06,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 421. [2022-11-03 01:55:06,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 1.3357142857142856) internal successors, (561), 420 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:06,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 561 transitions. [2022-11-03 01:55:06,468 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 561 transitions. Word has length 320 [2022-11-03 01:55:06,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:06,469 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 561 transitions. [2022-11-03 01:55:06,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:06,469 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 561 transitions. [2022-11-03 01:55:06,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:06,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:06,471 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:06,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (64)] Ended with exit code 0 [2022-11-03 01:55:06,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:06,687 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:06,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:06,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1565980749, now seen corresponding path program 1 times [2022-11-03 01:55:06,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:06,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644071977] [2022-11-03 01:55:06,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:06,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:06,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:06,691 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:06,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-03 01:55:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:07,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:07,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:07,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:07,908 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:07,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644071977] [2022-11-03 01:55:07,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644071977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:07,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:07,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:55:07,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646599599] [2022-11-03 01:55:07,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:07,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:55:07,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:07,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:55:07,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:55:07,910 INFO L87 Difference]: Start difference. First operand 421 states and 561 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:08,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:08,821 INFO L93 Difference]: Finished difference Result 1259 states and 1791 transitions. [2022-11-03 01:55:08,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:55:08,822 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:08,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:08,823 INFO L225 Difference]: With dead ends: 1259 [2022-11-03 01:55:08,823 INFO L226 Difference]: Without dead ends: 982 [2022-11-03 01:55:08,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:55:08,824 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 2692 mSDsluCounter, 2570 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2692 SdHoareTripleChecker+Valid, 3052 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:08,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2692 Valid, 3052 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:55:08,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2022-11-03 01:55:08,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 423. [2022-11-03 01:55:08,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 422 states have (on average 1.3341232227488151) internal successors, (563), 422 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:08,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 563 transitions. [2022-11-03 01:55:08,833 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 563 transitions. Word has length 320 [2022-11-03 01:55:08,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:08,834 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 563 transitions. [2022-11-03 01:55:08,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:08,834 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 563 transitions. [2022-11-03 01:55:08,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:08,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:08,836 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:08,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2022-11-03 01:55:09,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:09,039 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:09,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:09,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1038586699, now seen corresponding path program 1 times [2022-11-03 01:55:09,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:09,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457097427] [2022-11-03 01:55:09,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:09,041 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:09,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:09,042 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:09,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2022-11-03 01:55:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:09,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:09,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:10,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:10,250 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:10,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457097427] [2022-11-03 01:55:10,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457097427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:10,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:10,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:55:10,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732007468] [2022-11-03 01:55:10,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:10,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:55:10,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:10,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:55:10,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:55:10,253 INFO L87 Difference]: Start difference. First operand 423 states and 563 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:11,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:11,154 INFO L93 Difference]: Finished difference Result 1273 states and 1807 transitions. [2022-11-03 01:55:11,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:55:11,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:11,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:11,157 INFO L225 Difference]: With dead ends: 1273 [2022-11-03 01:55:11,157 INFO L226 Difference]: Without dead ends: 994 [2022-11-03 01:55:11,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:55:11,158 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 2686 mSDsluCounter, 2579 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2686 SdHoareTripleChecker+Valid, 3068 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:11,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2686 Valid, 3068 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:55:11,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2022-11-03 01:55:11,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 427. [2022-11-03 01:55:11,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.3333333333333333) internal successors, (568), 426 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:11,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 568 transitions. [2022-11-03 01:55:11,167 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 568 transitions. Word has length 320 [2022-11-03 01:55:11,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:11,168 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 568 transitions. [2022-11-03 01:55:11,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:11,168 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 568 transitions. [2022-11-03 01:55:11,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:11,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:11,170 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:11,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:11,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:11,392 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:11,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:11,392 INFO L85 PathProgramCache]: Analyzing trace with hash -948526409, now seen corresponding path program 1 times [2022-11-03 01:55:11,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:11,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950922807] [2022-11-03 01:55:11,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:11,394 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:11,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:11,396 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:11,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-03 01:55:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:12,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:12,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:12,659 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:12,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:12,659 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:12,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950922807] [2022-11-03 01:55:12,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950922807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:12,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:12,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:55:12,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307735628] [2022-11-03 01:55:12,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:12,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:55:12,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:12,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:55:12,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:55:12,661 INFO L87 Difference]: Start difference. First operand 427 states and 568 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:13,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:13,384 INFO L93 Difference]: Finished difference Result 1263 states and 1792 transitions. [2022-11-03 01:55:13,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:55:13,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:13,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:13,386 INFO L225 Difference]: With dead ends: 1263 [2022-11-03 01:55:13,386 INFO L226 Difference]: Without dead ends: 980 [2022-11-03 01:55:13,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:55:13,388 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 2293 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2293 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:13,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2293 Valid, 2317 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 01:55:13,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2022-11-03 01:55:13,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 429. [2022-11-03 01:55:13,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.3317757009345794) internal successors, (570), 428 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:13,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 570 transitions. [2022-11-03 01:55:13,397 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 570 transitions. Word has length 320 [2022-11-03 01:55:13,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:13,397 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 570 transitions. [2022-11-03 01:55:13,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:13,398 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 570 transitions. [2022-11-03 01:55:13,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:13,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:13,399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:13,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2022-11-03 01:55:13,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:13,607 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:13,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:13,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1938714937, now seen corresponding path program 1 times [2022-11-03 01:55:13,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:13,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747118761] [2022-11-03 01:55:13,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:13,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:13,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:13,615 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:13,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2022-11-03 01:55:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:14,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:14,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:14,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:14,854 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:14,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747118761] [2022-11-03 01:55:14,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747118761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:14,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:14,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:55:14,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655220070] [2022-11-03 01:55:14,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:14,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:55:14,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:14,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:55:14,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:55:14,856 INFO L87 Difference]: Start difference. First operand 429 states and 570 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:15,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:15,767 INFO L93 Difference]: Finished difference Result 1275 states and 1806 transitions. [2022-11-03 01:55:15,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:55:15,768 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:15,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:15,769 INFO L225 Difference]: With dead ends: 1275 [2022-11-03 01:55:15,769 INFO L226 Difference]: Without dead ends: 990 [2022-11-03 01:55:15,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:55:15,770 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 2660 mSDsluCounter, 2583 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2660 SdHoareTripleChecker+Valid, 3078 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:15,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2660 Valid, 3078 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:55:15,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2022-11-03 01:55:15,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 431. [2022-11-03 01:55:15,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 1.330232558139535) internal successors, (572), 430 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:15,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 572 transitions. [2022-11-03 01:55:15,777 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 572 transitions. Word has length 320 [2022-11-03 01:55:15,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:15,777 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 572 transitions. [2022-11-03 01:55:15,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:15,778 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 572 transitions. [2022-11-03 01:55:15,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:15,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:15,779 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:15,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:15,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:15,980 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:15,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:15,980 INFO L85 PathProgramCache]: Analyzing trace with hash 15464507, now seen corresponding path program 1 times [2022-11-03 01:55:15,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:15,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739251671] [2022-11-03 01:55:15,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:15,982 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:15,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:15,983 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:15,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-03 01:55:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:16,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:16,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:17,210 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:17,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:17,210 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:17,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739251671] [2022-11-03 01:55:17,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739251671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:17,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:17,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:55:17,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535046422] [2022-11-03 01:55:17,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:17,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:55:17,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:17,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:55:17,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:55:17,212 INFO L87 Difference]: Start difference. First operand 431 states and 572 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:18,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:18,119 INFO L93 Difference]: Finished difference Result 1283 states and 1814 transitions. [2022-11-03 01:55:18,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:55:18,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:18,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:18,120 INFO L225 Difference]: With dead ends: 1283 [2022-11-03 01:55:18,120 INFO L226 Difference]: Without dead ends: 996 [2022-11-03 01:55:18,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:55:18,121 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 2655 mSDsluCounter, 2587 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2655 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:18,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2655 Valid, 3085 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:55:18,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2022-11-03 01:55:18,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 433. [2022-11-03 01:55:18,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 1.3287037037037037) internal successors, (574), 432 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:18,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 574 transitions. [2022-11-03 01:55:18,130 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 574 transitions. Word has length 320 [2022-11-03 01:55:18,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:18,130 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 574 transitions. [2022-11-03 01:55:18,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:18,130 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 574 transitions. [2022-11-03 01:55:18,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:18,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:18,131 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:18,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Ended with exit code 0 [2022-11-03 01:55:18,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:18,332 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:18,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:18,332 INFO L85 PathProgramCache]: Analyzing trace with hash 514021309, now seen corresponding path program 1 times [2022-11-03 01:55:18,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:18,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772473557] [2022-11-03 01:55:18,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:18,334 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:18,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:18,335 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:18,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2022-11-03 01:55:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:19,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:19,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:19,585 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:19,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:19,586 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:19,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772473557] [2022-11-03 01:55:19,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772473557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:19,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:19,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:55:19,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871418100] [2022-11-03 01:55:19,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:19,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:55:19,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:19,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:55:19,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:55:19,587 INFO L87 Difference]: Start difference. First operand 433 states and 574 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:20,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:20,516 INFO L93 Difference]: Finished difference Result 1291 states and 1822 transitions. [2022-11-03 01:55:20,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:55:20,516 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:20,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:20,517 INFO L225 Difference]: With dead ends: 1291 [2022-11-03 01:55:20,517 INFO L226 Difference]: Without dead ends: 1002 [2022-11-03 01:55:20,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:55:20,518 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 2650 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2650 SdHoareTripleChecker+Valid, 3092 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:20,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2650 Valid, 3092 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:55:20,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2022-11-03 01:55:20,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 435. [2022-11-03 01:55:20,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 1.327188940092166) internal successors, (576), 434 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:20,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 576 transitions. [2022-11-03 01:55:20,528 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 576 transitions. Word has length 320 [2022-11-03 01:55:20,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:20,528 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 576 transitions. [2022-11-03 01:55:20,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:20,529 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 576 transitions. [2022-11-03 01:55:20,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:20,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:20,531 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:20,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:20,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:20,755 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:20,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:20,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1917890495, now seen corresponding path program 1 times [2022-11-03 01:55:20,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:20,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351195825] [2022-11-03 01:55:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:20,757 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:20,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:20,758 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:20,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-03 01:55:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:21,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:21,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:21,994 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:21,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:21,994 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:21,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351195825] [2022-11-03 01:55:21,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351195825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:21,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:21,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:55:21,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756194953] [2022-11-03 01:55:21,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:21,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:55:21,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:21,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:55:21,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:55:21,996 INFO L87 Difference]: Start difference. First operand 435 states and 576 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:22,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:22,741 INFO L93 Difference]: Finished difference Result 1279 states and 1804 transitions. [2022-11-03 01:55:22,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:55:22,742 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:22,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:22,743 INFO L225 Difference]: With dead ends: 1279 [2022-11-03 01:55:22,743 INFO L226 Difference]: Without dead ends: 988 [2022-11-03 01:55:22,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:55:22,743 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 2261 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2261 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:22,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2261 Valid, 2341 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 01:55:22,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2022-11-03 01:55:22,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 437. [2022-11-03 01:55:22,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 1.3256880733944953) internal successors, (578), 436 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:22,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 578 transitions. [2022-11-03 01:55:22,752 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 578 transitions. Word has length 320 [2022-11-03 01:55:22,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:22,752 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 578 transitions. [2022-11-03 01:55:22,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:22,752 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 578 transitions. [2022-11-03 01:55:22,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:22,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:22,754 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:22,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Ended with exit code 0 [2022-11-03 01:55:22,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:22,954 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:22,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:22,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1709694911, now seen corresponding path program 1 times [2022-11-03 01:55:22,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:22,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715488229] [2022-11-03 01:55:22,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:22,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:22,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:22,957 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:22,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2022-11-03 01:55:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:23,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:23,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:24,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:24,200 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:24,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715488229] [2022-11-03 01:55:24,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715488229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:24,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:24,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:55:24,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496568760] [2022-11-03 01:55:24,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:24,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:55:24,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:24,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:55:24,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:55:24,202 INFO L87 Difference]: Start difference. First operand 437 states and 578 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:25,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:25,131 INFO L93 Difference]: Finished difference Result 1291 states and 1818 transitions. [2022-11-03 01:55:25,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:55:25,138 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:25,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:25,139 INFO L225 Difference]: With dead ends: 1291 [2022-11-03 01:55:25,139 INFO L226 Difference]: Without dead ends: 998 [2022-11-03 01:55:25,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:55:25,140 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 2624 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2624 SdHoareTripleChecker+Valid, 3102 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:25,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2624 Valid, 3102 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:55:25,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-11-03 01:55:25,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 439. [2022-11-03 01:55:25,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 1.3242009132420092) internal successors, (580), 438 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:25,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 580 transitions. [2022-11-03 01:55:25,147 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 580 transitions. Word has length 320 [2022-11-03 01:55:25,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:25,147 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 580 transitions. [2022-11-03 01:55:25,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:25,147 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 580 transitions. [2022-11-03 01:55:25,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:25,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:25,149 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:25,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (72)] Ended with exit code 0 [2022-11-03 01:55:25,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:25,349 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:25,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:25,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1364866749, now seen corresponding path program 1 times [2022-11-03 01:55:25,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:25,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201893052] [2022-11-03 01:55:25,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:25,351 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:25,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:25,352 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:25,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2022-11-03 01:55:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:26,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:26,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:26,684 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:26,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:26,684 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:26,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201893052] [2022-11-03 01:55:26,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201893052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:26,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:26,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:55:26,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111091774] [2022-11-03 01:55:26,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:26,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:55:26,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:26,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:55:26,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:55:26,686 INFO L87 Difference]: Start difference. First operand 439 states and 580 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:27,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:27,615 INFO L93 Difference]: Finished difference Result 1299 states and 1826 transitions. [2022-11-03 01:55:27,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:55:27,616 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:27,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:27,617 INFO L225 Difference]: With dead ends: 1299 [2022-11-03 01:55:27,617 INFO L226 Difference]: Without dead ends: 1004 [2022-11-03 01:55:27,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:55:27,618 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 2619 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2619 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:27,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2619 Valid, 3109 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:55:27,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2022-11-03 01:55:27,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 441. [2022-11-03 01:55:27,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 1.3227272727272728) internal successors, (582), 440 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:27,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 582 transitions. [2022-11-03 01:55:27,624 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 582 transitions. Word has length 320 [2022-11-03 01:55:27,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:27,624 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 582 transitions. [2022-11-03 01:55:27,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:27,624 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 582 transitions. [2022-11-03 01:55:27,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:27,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:27,625 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:27,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (73)] Ended with exit code 0 [2022-11-03 01:55:27,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:27,826 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:27,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:27,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1160628933, now seen corresponding path program 1 times [2022-11-03 01:55:27,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:27,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434047615] [2022-11-03 01:55:27,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:27,828 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:27,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:27,829 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:27,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2022-11-03 01:55:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:28,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:28,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:29,084 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:29,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:29,084 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:29,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434047615] [2022-11-03 01:55:29,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434047615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:29,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:29,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:55:29,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759206531] [2022-11-03 01:55:29,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:29,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:55:29,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:29,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:55:29,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:55:29,086 INFO L87 Difference]: Start difference. First operand 441 states and 582 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:29,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:29,853 INFO L93 Difference]: Finished difference Result 1293 states and 1816 transitions. [2022-11-03 01:55:29,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:55:29,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:29,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:29,855 INFO L225 Difference]: With dead ends: 1293 [2022-11-03 01:55:29,855 INFO L226 Difference]: Without dead ends: 996 [2022-11-03 01:55:29,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:55:29,859 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 2232 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 2367 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:29,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2232 Valid, 2367 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:55:29,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2022-11-03 01:55:29,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 445. [2022-11-03 01:55:29,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.322072072072072) internal successors, (587), 444 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:29,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 587 transitions. [2022-11-03 01:55:29,868 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 587 transitions. Word has length 320 [2022-11-03 01:55:29,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:29,868 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 587 transitions. [2022-11-03 01:55:29,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:29,869 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 587 transitions. [2022-11-03 01:55:29,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:29,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:29,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:29,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:30,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:30,091 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:30,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:30,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1687757497, now seen corresponding path program 1 times [2022-11-03 01:55:30,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:30,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287345639] [2022-11-03 01:55:30,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:30,093 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:30,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:30,093 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:30,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2022-11-03 01:55:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:30,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:30,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:31,355 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:31,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:31,355 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:31,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287345639] [2022-11-03 01:55:31,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287345639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:31,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:31,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:55:31,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74974298] [2022-11-03 01:55:31,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:31,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:55:31,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:31,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:55:31,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:55:31,357 INFO L87 Difference]: Start difference. First operand 445 states and 587 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:32,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:32,309 INFO L93 Difference]: Finished difference Result 1307 states and 1833 transitions. [2022-11-03 01:55:32,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:55:32,310 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:32,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:32,311 INFO L225 Difference]: With dead ends: 1307 [2022-11-03 01:55:32,311 INFO L226 Difference]: Without dead ends: 1006 [2022-11-03 01:55:32,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:55:32,312 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 2592 mSDsluCounter, 2608 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2592 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:32,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2592 Valid, 3128 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:55:32,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2022-11-03 01:55:32,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 447. [2022-11-03 01:55:32,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.3206278026905829) internal successors, (589), 446 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:32,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 589 transitions. [2022-11-03 01:55:32,322 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 589 transitions. Word has length 320 [2022-11-03 01:55:32,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:32,323 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 589 transitions. [2022-11-03 01:55:32,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:32,323 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 589 transitions. [2022-11-03 01:55:32,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:32,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:32,325 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:32,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:32,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:32,547 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:32,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:32,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1301895095, now seen corresponding path program 1 times [2022-11-03 01:55:32,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:32,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860930740] [2022-11-03 01:55:32,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:32,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:32,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:32,549 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:32,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2022-11-03 01:55:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:33,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:33,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:33,833 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:33,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:33,834 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:33,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860930740] [2022-11-03 01:55:33,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860930740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:33,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:33,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:55:33,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900684385] [2022-11-03 01:55:33,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:33,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:55:33,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:33,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:55:33,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:55:33,835 INFO L87 Difference]: Start difference. First operand 447 states and 589 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:34,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:34,776 INFO L93 Difference]: Finished difference Result 1315 states and 1841 transitions. [2022-11-03 01:55:34,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:55:34,777 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:34,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:34,778 INFO L225 Difference]: With dead ends: 1315 [2022-11-03 01:55:34,778 INFO L226 Difference]: Without dead ends: 1012 [2022-11-03 01:55:34,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:55:34,779 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 2587 mSDsluCounter, 2612 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2587 SdHoareTripleChecker+Valid, 3135 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:34,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2587 Valid, 3135 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:55:34,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2022-11-03 01:55:34,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 449. [2022-11-03 01:55:34,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.3191964285714286) internal successors, (591), 448 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:34,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 591 transitions. [2022-11-03 01:55:34,785 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 591 transitions. Word has length 320 [2022-11-03 01:55:34,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:34,785 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 591 transitions. [2022-11-03 01:55:34,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:34,785 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 591 transitions. [2022-11-03 01:55:34,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:34,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:34,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:34,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (76)] Ended with exit code 0 [2022-11-03 01:55:34,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:34,987 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:34,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:34,987 INFO L85 PathProgramCache]: Analyzing trace with hash 629230539, now seen corresponding path program 1 times [2022-11-03 01:55:34,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:34,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712457454] [2022-11-03 01:55:34,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:34,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:34,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:34,989 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:34,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2022-11-03 01:55:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:35,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:35,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:36,278 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:36,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:36,278 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:36,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712457454] [2022-11-03 01:55:36,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712457454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:36,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:36,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:55:36,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798400658] [2022-11-03 01:55:36,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:36,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:55:36,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:36,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:55:36,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:55:36,280 INFO L87 Difference]: Start difference. First operand 449 states and 591 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:37,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:37,231 INFO L93 Difference]: Finished difference Result 1323 states and 1849 transitions. [2022-11-03 01:55:37,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:55:37,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:37,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:37,232 INFO L225 Difference]: With dead ends: 1323 [2022-11-03 01:55:37,233 INFO L226 Difference]: Without dead ends: 1018 [2022-11-03 01:55:37,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:55:37,233 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 2582 mSDsluCounter, 2616 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2582 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:37,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2582 Valid, 3142 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:55:37,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2022-11-03 01:55:37,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 451. [2022-11-03 01:55:37,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 1.3177777777777777) internal successors, (593), 450 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:37,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 593 transitions. [2022-11-03 01:55:37,241 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 593 transitions. Word has length 320 [2022-11-03 01:55:37,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:37,241 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 593 transitions. [2022-11-03 01:55:37,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:37,241 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 593 transitions. [2022-11-03 01:55:37,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:37,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:37,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:37,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (77)] Ended with exit code 0 [2022-11-03 01:55:37,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:37,443 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:37,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:37,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1768757299, now seen corresponding path program 1 times [2022-11-03 01:55:37,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:37,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706706295] [2022-11-03 01:55:37,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:37,445 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:37,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:37,446 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:37,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2022-11-03 01:55:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:38,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:38,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:38,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:38,727 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:38,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706706295] [2022-11-03 01:55:38,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706706295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:38,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:38,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:55:38,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983076879] [2022-11-03 01:55:38,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:38,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:55:38,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:38,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:55:38,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:55:38,728 INFO L87 Difference]: Start difference. First operand 451 states and 593 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:39,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:39,512 INFO L93 Difference]: Finished difference Result 1311 states and 1831 transitions. [2022-11-03 01:55:39,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:55:39,513 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:39,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:39,513 INFO L225 Difference]: With dead ends: 1311 [2022-11-03 01:55:39,513 INFO L226 Difference]: Without dead ends: 1004 [2022-11-03 01:55:39,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:55:39,514 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 2200 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2200 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:39,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2200 Valid, 2391 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:55:39,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2022-11-03 01:55:39,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 453. [2022-11-03 01:55:39,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 1.3163716814159292) internal successors, (595), 452 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:39,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 595 transitions. [2022-11-03 01:55:39,519 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 595 transitions. Word has length 320 [2022-11-03 01:55:39,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:39,519 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 595 transitions. [2022-11-03 01:55:39,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:39,520 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 595 transitions. [2022-11-03 01:55:39,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:39,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:39,521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:39,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (78)] Ended with exit code 0 [2022-11-03 01:55:39,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:39,723 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:39,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:39,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1342202801, now seen corresponding path program 1 times [2022-11-03 01:55:39,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:39,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49802815] [2022-11-03 01:55:39,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:39,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:39,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:39,728 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:39,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2022-11-03 01:55:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:40,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:40,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:41,019 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:41,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:41,019 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:41,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49802815] [2022-11-03 01:55:41,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49802815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:41,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:41,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:55:41,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031190235] [2022-11-03 01:55:41,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:41,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:55:41,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:41,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:55:41,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:55:41,021 INFO L87 Difference]: Start difference. First operand 453 states and 595 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:41,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:41,988 INFO L93 Difference]: Finished difference Result 1323 states and 1845 transitions. [2022-11-03 01:55:41,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:55:41,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:41,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:41,990 INFO L225 Difference]: With dead ends: 1323 [2022-11-03 01:55:41,990 INFO L226 Difference]: Without dead ends: 1014 [2022-11-03 01:55:41,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:55:41,991 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 2556 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2556 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:41,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2556 Valid, 3152 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:55:41,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2022-11-03 01:55:41,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 455. [2022-11-03 01:55:41,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 1.3149779735682818) internal successors, (597), 454 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:41,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 597 transitions. [2022-11-03 01:55:41,997 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 597 transitions. Word has length 320 [2022-11-03 01:55:41,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:41,997 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 597 transitions. [2022-11-03 01:55:41,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:41,998 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 597 transitions. [2022-11-03 01:55:41,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:41,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:41,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:42,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (79)] Ended with exit code 0 [2022-11-03 01:55:42,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:42,200 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:42,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:42,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1498183343, now seen corresponding path program 1 times [2022-11-03 01:55:42,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:42,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874073524] [2022-11-03 01:55:42,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:42,203 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:42,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:42,204 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:42,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2022-11-03 01:55:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:42,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:42,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:43,546 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:43,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:43,547 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:43,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874073524] [2022-11-03 01:55:43,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874073524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:43,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:43,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:55:43,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313244519] [2022-11-03 01:55:43,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:43,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:55:43,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:43,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:55:43,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:55:43,548 INFO L87 Difference]: Start difference. First operand 455 states and 597 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:44,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:44,513 INFO L93 Difference]: Finished difference Result 1337 states and 1861 transitions. [2022-11-03 01:55:44,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:55:44,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:44,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:44,515 INFO L225 Difference]: With dead ends: 1337 [2022-11-03 01:55:44,515 INFO L226 Difference]: Without dead ends: 1026 [2022-11-03 01:55:44,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:55:44,515 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 2550 mSDsluCounter, 2629 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2550 SdHoareTripleChecker+Valid, 3168 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:44,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2550 Valid, 3168 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:55:44,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2022-11-03 01:55:44,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 459. [2022-11-03 01:55:44,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.314410480349345) internal successors, (602), 458 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:44,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 602 transitions. [2022-11-03 01:55:44,522 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 602 transitions. Word has length 320 [2022-11-03 01:55:44,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:44,522 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 602 transitions. [2022-11-03 01:55:44,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:44,523 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 602 transitions. [2022-11-03 01:55:44,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:44,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:44,524 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:44,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (80)] Ended with exit code 0 [2022-11-03 01:55:44,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:44,725 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:44,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:44,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1428535469, now seen corresponding path program 1 times [2022-11-03 01:55:44,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:44,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041024055] [2022-11-03 01:55:44,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:44,727 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:44,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:44,728 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:44,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2022-11-03 01:55:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:45,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:45,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:46,034 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:46,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:46,034 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:46,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041024055] [2022-11-03 01:55:46,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041024055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:46,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:46,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:55:46,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367461562] [2022-11-03 01:55:46,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:46,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:55:46,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:46,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:55:46,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:55:46,036 INFO L87 Difference]: Start difference. First operand 459 states and 602 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:46,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:46,832 INFO L93 Difference]: Finished difference Result 1327 states and 1846 transitions. [2022-11-03 01:55:46,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:55:46,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:46,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:46,834 INFO L225 Difference]: With dead ends: 1327 [2022-11-03 01:55:46,834 INFO L226 Difference]: Without dead ends: 1012 [2022-11-03 01:55:46,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:55:46,835 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 2171 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2171 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:46,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2171 Valid, 2417 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:55:46,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2022-11-03 01:55:46,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 461. [2022-11-03 01:55:46,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 1.3130434782608695) internal successors, (604), 460 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:46,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 604 transitions. [2022-11-03 01:55:46,842 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 604 transitions. Word has length 320 [2022-11-03 01:55:46,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:46,842 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 604 transitions. [2022-11-03 01:55:46,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:46,843 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 604 transitions. [2022-11-03 01:55:46,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:46,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:46,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:46,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:47,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:47,045 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:47,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:47,045 INFO L85 PathProgramCache]: Analyzing trace with hash -29581867, now seen corresponding path program 1 times [2022-11-03 01:55:47,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:47,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813995027] [2022-11-03 01:55:47,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:47,047 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:47,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:47,048 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:47,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2022-11-03 01:55:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:47,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:47,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:48,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:48,397 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:48,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813995027] [2022-11-03 01:55:48,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813995027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:48,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:48,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:55:48,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909575133] [2022-11-03 01:55:48,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:48,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:55:48,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:48,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:55:48,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:55:48,399 INFO L87 Difference]: Start difference. First operand 461 states and 604 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:49,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:49,379 INFO L93 Difference]: Finished difference Result 1339 states and 1860 transitions. [2022-11-03 01:55:49,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:55:49,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:49,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:49,380 INFO L225 Difference]: With dead ends: 1339 [2022-11-03 01:55:49,380 INFO L226 Difference]: Without dead ends: 1022 [2022-11-03 01:55:49,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:55:49,381 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 2524 mSDsluCounter, 2633 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2524 SdHoareTripleChecker+Valid, 3178 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:49,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2524 Valid, 3178 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:55:49,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2022-11-03 01:55:49,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 463. [2022-11-03 01:55:49,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.3116883116883118) internal successors, (606), 462 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:49,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 606 transitions. [2022-11-03 01:55:49,387 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 606 transitions. Word has length 320 [2022-11-03 01:55:49,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:49,388 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 606 transitions. [2022-11-03 01:55:49,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:49,388 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 606 transitions. [2022-11-03 01:55:49,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:49,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:49,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:49,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:49,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:49,589 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:49,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:49,590 INFO L85 PathProgramCache]: Analyzing trace with hash 333884631, now seen corresponding path program 1 times [2022-11-03 01:55:49,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:49,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165732221] [2022-11-03 01:55:49,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:49,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:49,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:49,595 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:49,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2022-11-03 01:55:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:50,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:50,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:50,916 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:50,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:50,916 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:50,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165732221] [2022-11-03 01:55:50,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165732221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:50,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:50,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:55:50,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528625876] [2022-11-03 01:55:50,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:50,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:55:50,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:50,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:55:50,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:55:50,918 INFO L87 Difference]: Start difference. First operand 463 states and 606 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:51,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:51,898 INFO L93 Difference]: Finished difference Result 1347 states and 1868 transitions. [2022-11-03 01:55:51,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:55:51,899 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:51,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:51,900 INFO L225 Difference]: With dead ends: 1347 [2022-11-03 01:55:51,900 INFO L226 Difference]: Without dead ends: 1028 [2022-11-03 01:55:51,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:55:51,901 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 2519 mSDsluCounter, 2637 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2519 SdHoareTripleChecker+Valid, 3185 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:51,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2519 Valid, 3185 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:55:51,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2022-11-03 01:55:51,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 465. [2022-11-03 01:55:51,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 1.3103448275862069) internal successors, (608), 464 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:51,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 608 transitions. [2022-11-03 01:55:51,908 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 608 transitions. Word has length 320 [2022-11-03 01:55:51,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:51,909 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 608 transitions. [2022-11-03 01:55:51,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:51,909 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 608 transitions. [2022-11-03 01:55:51,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:51,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:51,910 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:51,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:52,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:52,110 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:52,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:52,111 INFO L85 PathProgramCache]: Analyzing trace with hash -210987943, now seen corresponding path program 1 times [2022-11-03 01:55:52,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:52,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235481481] [2022-11-03 01:55:52,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:52,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:52,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:52,113 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:52,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2022-11-03 01:55:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:52,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:52,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:53,464 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:53,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:53,465 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:53,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235481481] [2022-11-03 01:55:53,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235481481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:53,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:53,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:55:53,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613326539] [2022-11-03 01:55:53,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:53,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:55:53,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:53,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:55:53,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:55:53,466 INFO L87 Difference]: Start difference. First operand 465 states and 608 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:54,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:54,475 INFO L93 Difference]: Finished difference Result 1355 states and 1876 transitions. [2022-11-03 01:55:54,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:55:54,475 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:54,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:54,476 INFO L225 Difference]: With dead ends: 1355 [2022-11-03 01:55:54,477 INFO L226 Difference]: Without dead ends: 1034 [2022-11-03 01:55:54,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:55:54,477 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 2514 mSDsluCounter, 2641 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2514 SdHoareTripleChecker+Valid, 3192 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:54,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2514 Valid, 3192 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:55:54,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2022-11-03 01:55:54,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 467. [2022-11-03 01:55:54,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 466 states have (on average 1.3090128755364807) internal successors, (610), 466 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:54,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 610 transitions. [2022-11-03 01:55:54,486 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 610 transitions. Word has length 320 [2022-11-03 01:55:54,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:54,486 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 610 transitions. [2022-11-03 01:55:54,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:54,487 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 610 transitions. [2022-11-03 01:55:54,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:54,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:54,488 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:54,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (84)] Ended with exit code 0 [2022-11-03 01:55:54,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:54,689 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:54,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:54,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1159039909, now seen corresponding path program 1 times [2022-11-03 01:55:54,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:54,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585262591] [2022-11-03 01:55:54,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:54,691 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:54,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:54,692 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:54,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2022-11-03 01:55:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:55,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:55,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:56,034 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:56,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:56,034 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:56,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585262591] [2022-11-03 01:55:56,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585262591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:56,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:56,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:55:56,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082387374] [2022-11-03 01:55:56,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:56,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:55:56,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:56,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:55:56,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:55:56,036 INFO L87 Difference]: Start difference. First operand 467 states and 610 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:56,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:56,869 INFO L93 Difference]: Finished difference Result 1343 states and 1858 transitions. [2022-11-03 01:55:56,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:55:56,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:56,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:56,870 INFO L225 Difference]: With dead ends: 1343 [2022-11-03 01:55:56,870 INFO L226 Difference]: Without dead ends: 1020 [2022-11-03 01:55:56,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:55:56,871 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 2139 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2139 SdHoareTripleChecker+Valid, 2441 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:56,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2139 Valid, 2441 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:55:56,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2022-11-03 01:55:56,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 469. [2022-11-03 01:55:56,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 1.3076923076923077) internal successors, (612), 468 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:56,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 612 transitions. [2022-11-03 01:55:56,878 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 612 transitions. Word has length 320 [2022-11-03 01:55:56,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:56,878 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 612 transitions. [2022-11-03 01:55:56,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:56,878 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 612 transitions. [2022-11-03 01:55:56,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:56,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:56,880 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:56,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:57,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:57,083 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:57,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:57,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1593545507, now seen corresponding path program 1 times [2022-11-03 01:55:57,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:57,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570547624] [2022-11-03 01:55:57,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:57,085 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:57,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:57,086 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:57,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2022-11-03 01:55:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:57,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:57,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:58,462 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:58,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:58,462 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:58,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570547624] [2022-11-03 01:55:58,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570547624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:58,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:58,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:55:58,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141641954] [2022-11-03 01:55:58,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:58,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:55:58,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:58,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:55:58,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:55:58,464 INFO L87 Difference]: Start difference. First operand 469 states and 612 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:59,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:59,493 INFO L93 Difference]: Finished difference Result 1355 states and 1872 transitions. [2022-11-03 01:55:59,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:55:59,494 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:55:59,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:59,495 INFO L225 Difference]: With dead ends: 1355 [2022-11-03 01:55:59,495 INFO L226 Difference]: Without dead ends: 1030 [2022-11-03 01:55:59,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:55:59,495 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 2488 mSDsluCounter, 2645 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2488 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:59,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2488 Valid, 3202 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:55:59,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-11-03 01:55:59,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 471. [2022-11-03 01:55:59,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.3063829787234043) internal successors, (614), 470 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:59,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 614 transitions. [2022-11-03 01:55:59,506 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 614 transitions. Word has length 320 [2022-11-03 01:55:59,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:59,507 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 614 transitions. [2022-11-03 01:55:59,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:55:59,507 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 614 transitions. [2022-11-03 01:55:59,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:55:59,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:59,509 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:59,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:59,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:59,731 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:59,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:59,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1994825183, now seen corresponding path program 1 times [2022-11-03 01:55:59,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:59,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949232941] [2022-11-03 01:55:59,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:59,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:59,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:59,734 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:59,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2022-11-03 01:56:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:00,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:00,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:01,102 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:01,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:01,102 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:01,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949232941] [2022-11-03 01:56:01,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949232941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:01,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:01,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:56:01,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657321913] [2022-11-03 01:56:01,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:01,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:56:01,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:01,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:56:01,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:01,104 INFO L87 Difference]: Start difference. First operand 471 states and 614 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:02,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:02,110 INFO L93 Difference]: Finished difference Result 1363 states and 1880 transitions. [2022-11-03 01:56:02,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:56:02,110 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:56:02,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:02,111 INFO L225 Difference]: With dead ends: 1363 [2022-11-03 01:56:02,111 INFO L226 Difference]: Without dead ends: 1036 [2022-11-03 01:56:02,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:56:02,112 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 2483 mSDsluCounter, 2649 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2483 SdHoareTripleChecker+Valid, 3209 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:02,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2483 Valid, 3209 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:56:02,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2022-11-03 01:56:02,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 473. [2022-11-03 01:56:02,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.305084745762712) internal successors, (616), 472 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:02,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 616 transitions. [2022-11-03 01:56:02,120 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 616 transitions. Word has length 320 [2022-11-03 01:56:02,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:02,121 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 616 transitions. [2022-11-03 01:56:02,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:02,121 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 616 transitions. [2022-11-03 01:56:02,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:56:02,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:02,123 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:02,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:02,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:02,323 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:02,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:02,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1438308511, now seen corresponding path program 1 times [2022-11-03 01:56:02,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:02,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375701492] [2022-11-03 01:56:02,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:02,325 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:02,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:02,326 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:02,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2022-11-03 01:56:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:03,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:03,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:03,685 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:03,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:03,685 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:03,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375701492] [2022-11-03 01:56:03,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375701492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:03,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:03,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:56:03,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471193176] [2022-11-03 01:56:03,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:03,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:56:03,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:03,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:56:03,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:56:03,687 INFO L87 Difference]: Start difference. First operand 473 states and 616 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:04,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:04,561 INFO L93 Difference]: Finished difference Result 1357 states and 1870 transitions. [2022-11-03 01:56:04,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:56:04,561 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:56:04,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:04,562 INFO L225 Difference]: With dead ends: 1357 [2022-11-03 01:56:04,562 INFO L226 Difference]: Without dead ends: 1028 [2022-11-03 01:56:04,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:56:04,563 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 2110 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 2467 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:04,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2110 Valid, 2467 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:56:04,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2022-11-03 01:56:04,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 477. [2022-11-03 01:56:04,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 1.3046218487394958) internal successors, (621), 476 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:04,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 621 transitions. [2022-11-03 01:56:04,571 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 621 transitions. Word has length 320 [2022-11-03 01:56:04,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:04,571 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 621 transitions. [2022-11-03 01:56:04,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:04,571 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 621 transitions. [2022-11-03 01:56:04,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:56:04,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:04,573 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:04,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (88)] Ended with exit code 0 [2022-11-03 01:56:04,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:04,774 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:04,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:04,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1574486499, now seen corresponding path program 1 times [2022-11-03 01:56:04,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:04,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571236359] [2022-11-03 01:56:04,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:04,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:04,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:04,776 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:04,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2022-11-03 01:56:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:05,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:05,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:06,220 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:06,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:06,221 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:06,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1571236359] [2022-11-03 01:56:06,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1571236359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:06,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:06,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:56:06,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746138089] [2022-11-03 01:56:06,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:06,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:56:06,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:06,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:56:06,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:06,222 INFO L87 Difference]: Start difference. First operand 477 states and 621 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:07,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:07,283 INFO L93 Difference]: Finished difference Result 1371 states and 1887 transitions. [2022-11-03 01:56:07,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:56:07,284 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:56:07,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:07,285 INFO L225 Difference]: With dead ends: 1371 [2022-11-03 01:56:07,285 INFO L226 Difference]: Without dead ends: 1038 [2022-11-03 01:56:07,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:56:07,286 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 2456 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2456 SdHoareTripleChecker+Valid, 3228 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:07,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2456 Valid, 3228 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:56:07,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-11-03 01:56:07,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 479. [2022-11-03 01:56:07,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.3033472803347281) internal successors, (623), 478 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:07,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 623 transitions. [2022-11-03 01:56:07,293 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 623 transitions. Word has length 320 [2022-11-03 01:56:07,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:07,293 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 623 transitions. [2022-11-03 01:56:07,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:07,293 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 623 transitions. [2022-11-03 01:56:07,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:56:07,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:07,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:07,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (89)] Ended with exit code 0 [2022-11-03 01:56:07,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:07,495 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:07,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:07,496 INFO L85 PathProgramCache]: Analyzing trace with hash -147516187, now seen corresponding path program 1 times [2022-11-03 01:56:07,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:07,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807986452] [2022-11-03 01:56:07,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:07,497 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:07,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:07,498 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:07,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2022-11-03 01:56:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:08,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:08,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:08,868 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:08,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:08,868 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:08,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807986452] [2022-11-03 01:56:08,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807986452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:08,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:08,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:56:08,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181955669] [2022-11-03 01:56:08,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:08,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:56:08,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:08,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:56:08,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:08,870 INFO L87 Difference]: Start difference. First operand 479 states and 623 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:09,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:09,903 INFO L93 Difference]: Finished difference Result 1379 states and 1895 transitions. [2022-11-03 01:56:09,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:56:09,904 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:56:09,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:09,905 INFO L225 Difference]: With dead ends: 1379 [2022-11-03 01:56:09,905 INFO L226 Difference]: Without dead ends: 1044 [2022-11-03 01:56:09,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:56:09,906 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 2451 mSDsluCounter, 2662 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2451 SdHoareTripleChecker+Valid, 3235 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:09,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2451 Valid, 3235 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:56:09,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2022-11-03 01:56:09,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 481. [2022-11-03 01:56:09,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.3020833333333333) internal successors, (625), 480 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:09,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 625 transitions. [2022-11-03 01:56:09,913 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 625 transitions. Word has length 320 [2022-11-03 01:56:09,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:09,913 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 625 transitions. [2022-11-03 01:56:09,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:09,914 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 625 transitions. [2022-11-03 01:56:09,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:56:09,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:09,915 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:09,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (90)] Ended with exit code 0 [2022-11-03 01:56:10,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:10,116 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:10,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:10,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1781416039, now seen corresponding path program 1 times [2022-11-03 01:56:10,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:10,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146265640] [2022-11-03 01:56:10,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:10,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:10,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:10,119 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:10,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2022-11-03 01:56:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:10,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:10,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:11,505 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:11,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:11,506 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:11,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146265640] [2022-11-03 01:56:11,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146265640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:11,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:11,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:56:11,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185625662] [2022-11-03 01:56:11,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:11,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:56:11,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:11,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:56:11,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:11,507 INFO L87 Difference]: Start difference. First operand 481 states and 625 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:12,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:12,528 INFO L93 Difference]: Finished difference Result 1387 states and 1903 transitions. [2022-11-03 01:56:12,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:56:12,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:56:12,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:12,530 INFO L225 Difference]: With dead ends: 1387 [2022-11-03 01:56:12,530 INFO L226 Difference]: Without dead ends: 1050 [2022-11-03 01:56:12,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:56:12,531 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 2446 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2446 SdHoareTripleChecker+Valid, 3242 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:12,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2446 Valid, 3242 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:56:12,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2022-11-03 01:56:12,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 483. [2022-11-03 01:56:12,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.3008298755186722) internal successors, (627), 482 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:12,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 627 transitions. [2022-11-03 01:56:12,543 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 627 transitions. Word has length 320 [2022-11-03 01:56:12,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:12,543 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 627 transitions. [2022-11-03 01:56:12,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:12,544 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 627 transitions. [2022-11-03 01:56:12,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:56:12,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:12,546 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:12,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (91)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:12,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:12,768 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:12,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:12,768 INFO L85 PathProgramCache]: Analyzing trace with hash -786406295, now seen corresponding path program 1 times [2022-11-03 01:56:12,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:12,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208063384] [2022-11-03 01:56:12,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:12,769 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:12,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:12,770 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:12,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2022-11-03 01:56:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:13,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:13,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:14,163 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:14,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:14,163 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:14,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208063384] [2022-11-03 01:56:14,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208063384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:14,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:14,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:56:14,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143729083] [2022-11-03 01:56:14,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:14,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:56:14,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:14,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:56:14,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:56:14,164 INFO L87 Difference]: Start difference. First operand 483 states and 627 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:15,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:15,024 INFO L93 Difference]: Finished difference Result 1375 states and 1885 transitions. [2022-11-03 01:56:15,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:56:15,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:56:15,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:15,026 INFO L225 Difference]: With dead ends: 1375 [2022-11-03 01:56:15,026 INFO L226 Difference]: Without dead ends: 1036 [2022-11-03 01:56:15,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:56:15,027 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 2078 mSDsluCounter, 1912 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:15,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2078 Valid, 2491 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:56:15,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2022-11-03 01:56:15,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 485. [2022-11-03 01:56:15,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 1.2995867768595042) internal successors, (629), 484 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:15,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 629 transitions. [2022-11-03 01:56:15,037 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 629 transitions. Word has length 320 [2022-11-03 01:56:15,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:15,037 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 629 transitions. [2022-11-03 01:56:15,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:15,037 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 629 transitions. [2022-11-03 01:56:15,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:56:15,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:15,039 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:15,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (92)] Ended with exit code 0 [2022-11-03 01:56:15,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:15,239 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:15,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:15,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1861198059, now seen corresponding path program 1 times [2022-11-03 01:56:15,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:15,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084342285] [2022-11-03 01:56:15,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:15,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:15,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:15,242 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:15,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2022-11-03 01:56:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:15,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:15,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:16,650 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:16,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:16,651 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:16,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084342285] [2022-11-03 01:56:16,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084342285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:16,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:16,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:56:16,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757040040] [2022-11-03 01:56:16,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:16,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:56:16,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:16,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:56:16,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:16,652 INFO L87 Difference]: Start difference. First operand 485 states and 629 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:17,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:17,694 INFO L93 Difference]: Finished difference Result 1387 states and 1899 transitions. [2022-11-03 01:56:17,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:56:17,694 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:56:17,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:17,695 INFO L225 Difference]: With dead ends: 1387 [2022-11-03 01:56:17,695 INFO L226 Difference]: Without dead ends: 1046 [2022-11-03 01:56:17,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:56:17,696 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 2420 mSDsluCounter, 2670 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2420 SdHoareTripleChecker+Valid, 3252 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:17,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2420 Valid, 3252 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:56:17,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2022-11-03 01:56:17,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 487. [2022-11-03 01:56:17,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 1.2983539094650205) internal successors, (631), 486 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:17,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 631 transitions. [2022-11-03 01:56:17,703 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 631 transitions. Word has length 320 [2022-11-03 01:56:17,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:17,704 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 631 transitions. [2022-11-03 01:56:17,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:17,704 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 631 transitions. [2022-11-03 01:56:17,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:56:17,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:17,705 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:17,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (93)] Ended with exit code 0 [2022-11-03 01:56:17,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:17,906 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:17,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:17,906 INFO L85 PathProgramCache]: Analyzing trace with hash 822613485, now seen corresponding path program 1 times [2022-11-03 01:56:17,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:17,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667584768] [2022-11-03 01:56:17,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:17,908 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:17,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:17,908 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:17,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2022-11-03 01:56:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:18,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:18,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:19,317 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:19,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:19,317 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:19,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667584768] [2022-11-03 01:56:19,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667584768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:19,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:19,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:56:19,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14136968] [2022-11-03 01:56:19,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:19,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:56:19,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:19,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:56:19,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:19,319 INFO L87 Difference]: Start difference. First operand 487 states and 631 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:20,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:20,363 INFO L93 Difference]: Finished difference Result 1401 states and 1915 transitions. [2022-11-03 01:56:20,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:56:20,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:56:20,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:20,364 INFO L225 Difference]: With dead ends: 1401 [2022-11-03 01:56:20,364 INFO L226 Difference]: Without dead ends: 1058 [2022-11-03 01:56:20,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:56:20,365 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 2414 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2414 SdHoareTripleChecker+Valid, 3268 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:20,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2414 Valid, 3268 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:56:20,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2022-11-03 01:56:20,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 491. [2022-11-03 01:56:20,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 490 states have (on average 1.2979591836734694) internal successors, (636), 490 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:20,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 636 transitions. [2022-11-03 01:56:20,374 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 636 transitions. Word has length 320 [2022-11-03 01:56:20,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:20,374 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 636 transitions. [2022-11-03 01:56:20,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:20,374 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 636 transitions. [2022-11-03 01:56:20,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:56:20,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:20,375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:20,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (94)] Ended with exit code 0 [2022-11-03 01:56:20,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:20,576 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:20,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:20,576 INFO L85 PathProgramCache]: Analyzing trace with hash 941054959, now seen corresponding path program 1 times [2022-11-03 01:56:20,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:20,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302688357] [2022-11-03 01:56:20,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:20,578 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:20,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:20,579 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:20,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2022-11-03 01:56:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:21,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:21,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:21,992 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:21,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:21,992 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:21,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302688357] [2022-11-03 01:56:21,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302688357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:21,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:21,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:56:21,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977158519] [2022-11-03 01:56:21,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:21,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:56:21,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:21,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:56:21,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:56:21,993 INFO L87 Difference]: Start difference. First operand 491 states and 636 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:22,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:22,864 INFO L93 Difference]: Finished difference Result 1391 states and 1900 transitions. [2022-11-03 01:56:22,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:56:22,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:56:22,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:22,865 INFO L225 Difference]: With dead ends: 1391 [2022-11-03 01:56:22,865 INFO L226 Difference]: Without dead ends: 1044 [2022-11-03 01:56:22,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:56:22,866 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 2049 mSDsluCounter, 1925 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2049 SdHoareTripleChecker+Valid, 2517 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:22,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2049 Valid, 2517 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:56:22,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2022-11-03 01:56:22,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 493. [2022-11-03 01:56:22,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 1.2967479674796747) internal successors, (638), 492 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:22,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 638 transitions. [2022-11-03 01:56:22,874 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 638 transitions. Word has length 320 [2022-11-03 01:56:22,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:22,875 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 638 transitions. [2022-11-03 01:56:22,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:22,875 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 638 transitions. [2022-11-03 01:56:22,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:56:22,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:22,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:22,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (95)] Ended with exit code 0 [2022-11-03 01:56:23,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:23,077 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:23,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:23,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1092339087, now seen corresponding path program 1 times [2022-11-03 01:56:23,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:23,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141762909] [2022-11-03 01:56:23,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:23,079 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:23,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:23,080 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:23,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2022-11-03 01:56:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:23,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:23,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:24,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:24,487 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:24,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141762909] [2022-11-03 01:56:24,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141762909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:24,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:24,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:56:24,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882531538] [2022-11-03 01:56:24,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:24,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:56:24,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:24,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:56:24,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:24,488 INFO L87 Difference]: Start difference. First operand 493 states and 638 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:25,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:25,553 INFO L93 Difference]: Finished difference Result 1403 states and 1914 transitions. [2022-11-03 01:56:25,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:56:25,554 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:56:25,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:25,555 INFO L225 Difference]: With dead ends: 1403 [2022-11-03 01:56:25,555 INFO L226 Difference]: Without dead ends: 1054 [2022-11-03 01:56:25,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:56:25,555 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 2388 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2388 SdHoareTripleChecker+Valid, 3278 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:25,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2388 Valid, 3278 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:56:25,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2022-11-03 01:56:25,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 495. [2022-11-03 01:56:25,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.2955465587044535) internal successors, (640), 494 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:25,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 640 transitions. [2022-11-03 01:56:25,567 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 640 transitions. Word has length 320 [2022-11-03 01:56:25,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:25,567 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 640 transitions. [2022-11-03 01:56:25,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:25,568 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 640 transitions. [2022-11-03 01:56:25,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:56:25,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:25,570 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:25,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (96)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:25,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:25,785 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:25,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:25,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1895485811, now seen corresponding path program 1 times [2022-11-03 01:56:25,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:25,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770067664] [2022-11-03 01:56:25,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:25,787 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:25,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:25,788 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:25,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2022-11-03 01:56:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:26,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:26,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:27,202 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:27,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:27,203 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:27,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770067664] [2022-11-03 01:56:27,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770067664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:27,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:27,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:56:27,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418700614] [2022-11-03 01:56:27,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:27,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:56:27,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:27,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:56:27,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:27,205 INFO L87 Difference]: Start difference. First operand 495 states and 640 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:28,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:28,323 INFO L93 Difference]: Finished difference Result 1411 states and 1922 transitions. [2022-11-03 01:56:28,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:56:28,323 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:56:28,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:28,324 INFO L225 Difference]: With dead ends: 1411 [2022-11-03 01:56:28,324 INFO L226 Difference]: Without dead ends: 1060 [2022-11-03 01:56:28,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:56:28,325 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 2383 mSDsluCounter, 2687 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2383 SdHoareTripleChecker+Valid, 3285 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:28,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2383 Valid, 3285 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:56:28,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2022-11-03 01:56:28,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 497. [2022-11-03 01:56:28,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.2943548387096775) internal successors, (642), 496 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:28,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 642 transitions. [2022-11-03 01:56:28,333 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 642 transitions. Word has length 320 [2022-11-03 01:56:28,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:28,333 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 642 transitions. [2022-11-03 01:56:28,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:28,333 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 642 transitions. [2022-11-03 01:56:28,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:56:28,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:28,335 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:28,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (97)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:28,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:28,535 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:28,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:28,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1368440587, now seen corresponding path program 1 times [2022-11-03 01:56:28,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:28,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94889486] [2022-11-03 01:56:28,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:28,537 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:28,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:28,538 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:28,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2022-11-03 01:56:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:29,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:29,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:29,966 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:29,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:29,966 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:29,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94889486] [2022-11-03 01:56:29,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94889486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:29,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:29,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:56:29,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284372727] [2022-11-03 01:56:29,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:29,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:56:29,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:29,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:56:29,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:29,968 INFO L87 Difference]: Start difference. First operand 497 states and 642 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:31,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:31,036 INFO L93 Difference]: Finished difference Result 1419 states and 1930 transitions. [2022-11-03 01:56:31,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:56:31,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:56:31,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:31,038 INFO L225 Difference]: With dead ends: 1419 [2022-11-03 01:56:31,038 INFO L226 Difference]: Without dead ends: 1066 [2022-11-03 01:56:31,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:56:31,039 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 2378 mSDsluCounter, 2691 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 3292 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:31,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2378 Valid, 3292 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:56:31,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2022-11-03 01:56:31,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 499. [2022-11-03 01:56:31,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.2931726907630523) internal successors, (644), 498 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:31,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 644 transitions. [2022-11-03 01:56:31,045 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 644 transitions. Word has length 320 [2022-11-03 01:56:31,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:31,046 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 644 transitions. [2022-11-03 01:56:31,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:31,046 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 644 transitions. [2022-11-03 01:56:31,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:56:31,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:31,047 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:31,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (98)] Ended with exit code 0 [2022-11-03 01:56:31,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:31,248 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:31,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:31,248 INFO L85 PathProgramCache]: Analyzing trace with hash 232630519, now seen corresponding path program 1 times [2022-11-03 01:56:31,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:31,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931194004] [2022-11-03 01:56:31,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:31,249 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:31,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:31,250 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:31,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2022-11-03 01:56:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:31,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:31,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:32,675 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:32,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:32,675 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:32,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931194004] [2022-11-03 01:56:32,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931194004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:32,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:32,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:56:32,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162831537] [2022-11-03 01:56:32,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:32,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:56:32,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:32,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:56:32,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:56:32,677 INFO L87 Difference]: Start difference. First operand 499 states and 644 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:33,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:33,568 INFO L93 Difference]: Finished difference Result 1407 states and 1912 transitions. [2022-11-03 01:56:33,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:56:33,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:56:33,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:33,570 INFO L225 Difference]: With dead ends: 1407 [2022-11-03 01:56:33,570 INFO L226 Difference]: Without dead ends: 1052 [2022-11-03 01:56:33,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:56:33,570 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 2017 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2017 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:33,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2017 Valid, 2541 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:56:33,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2022-11-03 01:56:33,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 501. [2022-11-03 01:56:33,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.292) internal successors, (646), 500 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:33,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 646 transitions. [2022-11-03 01:56:33,579 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 646 transitions. Word has length 320 [2022-11-03 01:56:33,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:33,579 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 646 transitions. [2022-11-03 01:56:33,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:33,579 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 646 transitions. [2022-11-03 01:56:33,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:56:33,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:33,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:33,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (99)] Ended with exit code 0 [2022-11-03 01:56:33,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:33,781 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:33,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:33,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1584015737, now seen corresponding path program 1 times [2022-11-03 01:56:33,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:33,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129616201] [2022-11-03 01:56:33,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:33,783 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:33,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:33,784 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:33,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2022-11-03 01:56:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:34,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:34,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:35,216 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:35,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:35,216 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:35,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129616201] [2022-11-03 01:56:35,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129616201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:35,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:35,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:56:35,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994857649] [2022-11-03 01:56:35,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:35,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:56:35,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:35,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:56:35,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:35,218 INFO L87 Difference]: Start difference. First operand 501 states and 646 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:36,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:36,303 INFO L93 Difference]: Finished difference Result 1419 states and 1926 transitions. [2022-11-03 01:56:36,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:56:36,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:56:36,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:36,305 INFO L225 Difference]: With dead ends: 1419 [2022-11-03 01:56:36,305 INFO L226 Difference]: Without dead ends: 1062 [2022-11-03 01:56:36,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:56:36,306 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 2352 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2352 SdHoareTripleChecker+Valid, 3302 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:36,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2352 Valid, 3302 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:56:36,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2022-11-03 01:56:36,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 503. [2022-11-03 01:56:36,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 502 states have (on average 1.2908366533864541) internal successors, (648), 502 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:36,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 648 transitions. [2022-11-03 01:56:36,313 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 648 transitions. Word has length 320 [2022-11-03 01:56:36,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:36,313 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 648 transitions. [2022-11-03 01:56:36,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:36,313 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 648 transitions. [2022-11-03 01:56:36,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:56:36,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:36,315 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:36,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (100)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:36,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:36,519 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:36,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:36,519 INFO L85 PathProgramCache]: Analyzing trace with hash 700506747, now seen corresponding path program 1 times [2022-11-03 01:56:36,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:36,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029397158] [2022-11-03 01:56:36,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:36,521 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:36,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:36,522 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:36,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2022-11-03 01:56:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:37,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:37,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:37,994 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:37,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:37,994 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:37,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029397158] [2022-11-03 01:56:37,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029397158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:37,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:37,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:56:37,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620625189] [2022-11-03 01:56:37,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:37,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:56:37,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:37,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:56:37,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:37,996 INFO L87 Difference]: Start difference. First operand 503 states and 648 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:39,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:39,087 INFO L93 Difference]: Finished difference Result 1427 states and 1934 transitions. [2022-11-03 01:56:39,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:56:39,088 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:56:39,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:39,088 INFO L225 Difference]: With dead ends: 1427 [2022-11-03 01:56:39,088 INFO L226 Difference]: Without dead ends: 1068 [2022-11-03 01:56:39,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:56:39,089 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 2347 mSDsluCounter, 2699 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2347 SdHoareTripleChecker+Valid, 3309 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:39,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2347 Valid, 3309 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:56:39,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-11-03 01:56:39,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 505. [2022-11-03 01:56:39,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 1.2896825396825398) internal successors, (650), 504 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:39,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 650 transitions. [2022-11-03 01:56:39,098 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 650 transitions. Word has length 320 [2022-11-03 01:56:39,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:39,098 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 650 transitions. [2022-11-03 01:56:39,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:39,098 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 650 transitions. [2022-11-03 01:56:39,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:56:39,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:39,099 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:39,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (101)] Ended with exit code 0 [2022-11-03 01:56:39,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:39,303 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:39,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:39,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1240075267, now seen corresponding path program 1 times [2022-11-03 01:56:39,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:39,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340011047] [2022-11-03 01:56:39,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:39,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:39,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:39,307 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:39,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2022-11-03 01:56:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:40,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:40,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:40,747 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:40,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:40,747 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:40,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340011047] [2022-11-03 01:56:40,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340011047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:40,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:40,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:56:40,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144978723] [2022-11-03 01:56:40,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:40,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:56:40,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:40,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:56:40,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:56:40,749 INFO L87 Difference]: Start difference. First operand 505 states and 650 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:41,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:41,663 INFO L93 Difference]: Finished difference Result 1421 states and 1924 transitions. [2022-11-03 01:56:41,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:56:41,664 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:56:41,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:41,665 INFO L225 Difference]: With dead ends: 1421 [2022-11-03 01:56:41,665 INFO L226 Difference]: Without dead ends: 1060 [2022-11-03 01:56:41,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:56:41,665 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 1988 mSDsluCounter, 1950 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1988 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:41,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1988 Valid, 2567 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:56:41,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2022-11-03 01:56:41,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 509. [2022-11-03 01:56:41,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 508 states have (on average 1.2893700787401574) internal successors, (655), 508 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:41,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 655 transitions. [2022-11-03 01:56:41,677 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 655 transitions. Word has length 320 [2022-11-03 01:56:41,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:41,677 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 655 transitions. [2022-11-03 01:56:41,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:41,678 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 655 transitions. [2022-11-03 01:56:41,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:56:41,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:41,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:41,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (102)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:41,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:41,895 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:41,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:41,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1826351489, now seen corresponding path program 1 times [2022-11-03 01:56:41,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:41,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717209574] [2022-11-03 01:56:41,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:41,897 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:41,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:41,898 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:41,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2022-11-03 01:56:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:42,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:42,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:43,348 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:43,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:43,348 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:43,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717209574] [2022-11-03 01:56:43,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717209574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:43,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:43,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:56:43,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834310517] [2022-11-03 01:56:43,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:43,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:56:43,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:43,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:56:43,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:43,350 INFO L87 Difference]: Start difference. First operand 509 states and 655 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:44,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:44,439 INFO L93 Difference]: Finished difference Result 1435 states and 1941 transitions. [2022-11-03 01:56:44,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:56:44,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:56:44,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:44,440 INFO L225 Difference]: With dead ends: 1435 [2022-11-03 01:56:44,440 INFO L226 Difference]: Without dead ends: 1070 [2022-11-03 01:56:44,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:56:44,441 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 2320 mSDsluCounter, 2708 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2320 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:44,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2320 Valid, 3328 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:56:44,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2022-11-03 01:56:44,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 511. [2022-11-03 01:56:44,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 510 states have (on average 1.2882352941176471) internal successors, (657), 510 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:44,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 657 transitions. [2022-11-03 01:56:44,448 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 657 transitions. Word has length 320 [2022-11-03 01:56:44,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:44,448 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 657 transitions. [2022-11-03 01:56:44,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:44,448 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 657 transitions. [2022-11-03 01:56:44,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:56:44,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:44,449 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:44,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (103)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:44,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:44,653 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:44,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:44,653 INFO L85 PathProgramCache]: Analyzing trace with hash 50131329, now seen corresponding path program 1 times [2022-11-03 01:56:44,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:44,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517228886] [2022-11-03 01:56:44,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:44,655 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:44,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:44,656 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:44,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (104)] Waiting until timeout for monitored process [2022-11-03 01:56:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:45,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:45,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:46,157 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:46,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:46,158 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:46,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517228886] [2022-11-03 01:56:46,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517228886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:46,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:46,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:56:46,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801072502] [2022-11-03 01:56:46,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:46,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:56:46,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:46,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:56:46,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:46,159 INFO L87 Difference]: Start difference. First operand 511 states and 657 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:47,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:47,260 INFO L93 Difference]: Finished difference Result 1443 states and 1949 transitions. [2022-11-03 01:56:47,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:56:47,261 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:56:47,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:47,262 INFO L225 Difference]: With dead ends: 1443 [2022-11-03 01:56:47,262 INFO L226 Difference]: Without dead ends: 1076 [2022-11-03 01:56:47,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:56:47,263 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 2315 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2315 SdHoareTripleChecker+Valid, 3335 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:47,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2315 Valid, 3335 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 01:56:47,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2022-11-03 01:56:47,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 513. [2022-11-03 01:56:47,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 512 states have (on average 1.287109375) internal successors, (659), 512 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:47,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 659 transitions. [2022-11-03 01:56:47,274 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 659 transitions. Word has length 320 [2022-11-03 01:56:47,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:47,274 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 659 transitions. [2022-11-03 01:56:47,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:47,274 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 659 transitions. [2022-11-03 01:56:47,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:56:47,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:47,275 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:47,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (104)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:47,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:47,479 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:47,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:47,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1374987523, now seen corresponding path program 1 times [2022-11-03 01:56:47,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:47,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414708135] [2022-11-03 01:56:47,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:47,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:47,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:47,481 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:47,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (105)] Waiting until timeout for monitored process [2022-11-03 01:56:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:48,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:48,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:48,943 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:48,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:48,943 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:48,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414708135] [2022-11-03 01:56:48,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414708135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:48,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:48,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:56:48,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430012766] [2022-11-03 01:56:48,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:48,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:56:48,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:48,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:56:48,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:48,944 INFO L87 Difference]: Start difference. First operand 513 states and 659 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:50,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:50,058 INFO L93 Difference]: Finished difference Result 1451 states and 1957 transitions. [2022-11-03 01:56:50,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:56:50,059 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:56:50,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:50,059 INFO L225 Difference]: With dead ends: 1451 [2022-11-03 01:56:50,059 INFO L226 Difference]: Without dead ends: 1082 [2022-11-03 01:56:50,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:56:50,060 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 2310 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 3342 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:50,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2310 Valid, 3342 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 01:56:50,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2022-11-03 01:56:50,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 515. [2022-11-03 01:56:50,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 1.2859922178988328) internal successors, (661), 514 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:50,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 661 transitions. [2022-11-03 01:56:50,067 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 661 transitions. Word has length 320 [2022-11-03 01:56:50,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:50,067 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 661 transitions. [2022-11-03 01:56:50,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:50,068 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 661 transitions. [2022-11-03 01:56:50,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:56:50,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:50,069 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:50,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (105)] Ended with exit code 0 [2022-11-03 01:56:50,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:50,269 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:50,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:50,269 INFO L85 PathProgramCache]: Analyzing trace with hash 317149445, now seen corresponding path program 1 times [2022-11-03 01:56:50,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:50,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538907528] [2022-11-03 01:56:50,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:50,271 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:50,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:50,272 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:50,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (106)] Waiting until timeout for monitored process [2022-11-03 01:56:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:51,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:51,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:51,783 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:51,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:51,783 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:51,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538907528] [2022-11-03 01:56:51,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538907528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:51,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:51,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:56:51,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798951805] [2022-11-03 01:56:51,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:51,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:56:51,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:51,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:56:51,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:56:51,784 INFO L87 Difference]: Start difference. First operand 515 states and 661 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:52,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:52,717 INFO L93 Difference]: Finished difference Result 1439 states and 1939 transitions. [2022-11-03 01:56:52,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:56:52,718 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:56:52,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:52,718 INFO L225 Difference]: With dead ends: 1439 [2022-11-03 01:56:52,718 INFO L226 Difference]: Without dead ends: 1068 [2022-11-03 01:56:52,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:56:52,719 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 1956 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1956 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:52,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1956 Valid, 2591 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:56:52,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-11-03 01:56:52,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 517. [2022-11-03 01:56:52,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 1.2848837209302326) internal successors, (663), 516 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:52,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 663 transitions. [2022-11-03 01:56:52,726 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 663 transitions. Word has length 320 [2022-11-03 01:56:52,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:52,726 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 663 transitions. [2022-11-03 01:56:52,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:52,726 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 663 transitions. [2022-11-03 01:56:52,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:56:52,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:52,727 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:52,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (106)] Ended with exit code 0 [2022-11-03 01:56:52,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:52,928 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:52,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:52,928 INFO L85 PathProgramCache]: Analyzing trace with hash 557389191, now seen corresponding path program 1 times [2022-11-03 01:56:52,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:52,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079000733] [2022-11-03 01:56:52,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:52,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:52,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:52,931 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:52,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (107)] Waiting until timeout for monitored process [2022-11-03 01:56:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:53,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:53,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:54,427 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:54,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:54,428 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:54,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079000733] [2022-11-03 01:56:54,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079000733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:54,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:54,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:56:54,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117322705] [2022-11-03 01:56:54,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:54,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:56:54,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:54,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:56:54,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:54,429 INFO L87 Difference]: Start difference. First operand 517 states and 663 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:55,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:55,546 INFO L93 Difference]: Finished difference Result 1451 states and 1953 transitions. [2022-11-03 01:56:55,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:56:55,547 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:56:55,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:55,547 INFO L225 Difference]: With dead ends: 1451 [2022-11-03 01:56:55,547 INFO L226 Difference]: Without dead ends: 1078 [2022-11-03 01:56:55,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:56:55,548 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 2284 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2284 SdHoareTripleChecker+Valid, 3352 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:55,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2284 Valid, 3352 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 01:56:55,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2022-11-03 01:56:55,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 519. [2022-11-03 01:56:55,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.2837837837837838) internal successors, (665), 518 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:55,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 665 transitions. [2022-11-03 01:56:55,555 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 665 transitions. Word has length 320 [2022-11-03 01:56:55,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:55,555 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 665 transitions. [2022-11-03 01:56:55,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:55,556 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 665 transitions. [2022-11-03 01:56:55,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:56:55,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:55,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:55,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (107)] Ended with exit code 0 [2022-11-03 01:56:55,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:55,757 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:55,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:55,757 INFO L85 PathProgramCache]: Analyzing trace with hash 584454793, now seen corresponding path program 1 times [2022-11-03 01:56:55,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:55,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138934406] [2022-11-03 01:56:55,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:55,759 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:55,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:55,760 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:55,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (108)] Waiting until timeout for monitored process [2022-11-03 01:56:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:56,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:56,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:57,261 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:57,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:57,261 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:57,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138934406] [2022-11-03 01:56:57,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138934406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:57,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:57,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:56:57,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119080514] [2022-11-03 01:56:57,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:57,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:56:57,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:57,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:56:57,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:57,262 INFO L87 Difference]: Start difference. First operand 519 states and 665 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:58,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:58,401 INFO L93 Difference]: Finished difference Result 1465 states and 1969 transitions. [2022-11-03 01:56:58,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:56:58,401 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:56:58,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:58,402 INFO L225 Difference]: With dead ends: 1465 [2022-11-03 01:56:58,402 INFO L226 Difference]: Without dead ends: 1090 [2022-11-03 01:56:58,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:56:58,403 INFO L413 NwaCegarLoop]: 639 mSDtfsCounter, 2278 mSDsluCounter, 2729 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:58,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2278 Valid, 3368 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 01:56:58,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-11-03 01:56:58,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 523. [2022-11-03 01:56:58,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 522 states have (on average 1.2835249042145593) internal successors, (670), 522 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:58,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 670 transitions. [2022-11-03 01:56:58,413 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 670 transitions. Word has length 320 [2022-11-03 01:56:58,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:58,413 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 670 transitions. [2022-11-03 01:56:58,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:56:58,414 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 670 transitions. [2022-11-03 01:56:58,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:56:58,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:58,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:58,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (108)] Ended with exit code 0 [2022-11-03 01:56:58,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:58,615 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:58,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:58,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1326587765, now seen corresponding path program 1 times [2022-11-03 01:56:58,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:58,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909158680] [2022-11-03 01:56:58,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:58,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:58,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:58,618 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:58,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (109)] Waiting until timeout for monitored process [2022-11-03 01:56:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:59,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:59,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:00,144 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:57:00,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:57:00,145 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:57:00,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909158680] [2022-11-03 01:57:00,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909158680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:00,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:57:00,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:57:00,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795636989] [2022-11-03 01:57:00,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:00,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:57:00,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:57:00,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:57:00,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:57:00,146 INFO L87 Difference]: Start difference. First operand 523 states and 670 transitions. Second operand has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:01,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:01,122 INFO L93 Difference]: Finished difference Result 1455 states and 1954 transitions. [2022-11-03 01:57:01,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:57:01,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:57:01,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:01,124 INFO L225 Difference]: With dead ends: 1455 [2022-11-03 01:57:01,124 INFO L226 Difference]: Without dead ends: 1076 [2022-11-03 01:57:01,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:57:01,125 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 1927 mSDsluCounter, 1975 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1927 SdHoareTripleChecker+Valid, 2617 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:01,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1927 Valid, 2617 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:57:01,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2022-11-03 01:57:01,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 525. [2022-11-03 01:57:01,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 524 states have (on average 1.282442748091603) internal successors, (672), 524 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:01,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 672 transitions. [2022-11-03 01:57:01,133 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 672 transitions. Word has length 320 [2022-11-03 01:57:01,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:01,133 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 672 transitions. [2022-11-03 01:57:01,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:01,134 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 672 transitions. [2022-11-03 01:57:01,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:57:01,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:01,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:57:01,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (109)] Ended with exit code 0 [2022-11-03 01:57:01,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:57:01,335 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:01,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:01,335 INFO L85 PathProgramCache]: Analyzing trace with hash 2001028877, now seen corresponding path program 1 times [2022-11-03 01:57:01,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:57:01,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365255145] [2022-11-03 01:57:01,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:01,337 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:57:01,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:57:01,338 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:57:01,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (110)] Waiting until timeout for monitored process [2022-11-03 01:57:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:02,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:57:02,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:02,866 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:57:02,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:57:02,866 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:57:02,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365255145] [2022-11-03 01:57:02,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365255145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:02,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:57:02,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:57:02,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147596818] [2022-11-03 01:57:02,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:02,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:57:02,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:57:02,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:57:02,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:57:02,868 INFO L87 Difference]: Start difference. First operand 525 states and 672 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:03,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:03,999 INFO L93 Difference]: Finished difference Result 1467 states and 1968 transitions. [2022-11-03 01:57:04,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:57:04,000 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:57:04,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:04,001 INFO L225 Difference]: With dead ends: 1467 [2022-11-03 01:57:04,001 INFO L226 Difference]: Without dead ends: 1086 [2022-11-03 01:57:04,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:57:04,002 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 2252 mSDsluCounter, 2733 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2252 SdHoareTripleChecker+Valid, 3378 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:04,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2252 Valid, 3378 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 01:57:04,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2022-11-03 01:57:04,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 527. [2022-11-03 01:57:04,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 1.2813688212927756) internal successors, (674), 526 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 674 transitions. [2022-11-03 01:57:04,010 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 674 transitions. Word has length 320 [2022-11-03 01:57:04,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:04,011 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 674 transitions. [2022-11-03 01:57:04,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:04,011 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 674 transitions. [2022-11-03 01:57:04,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:57:04,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:04,012 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:57:04,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (110)] Ended with exit code 0 [2022-11-03 01:57:04,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:57:04,212 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:04,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:04,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1508402703, now seen corresponding path program 1 times [2022-11-03 01:57:04,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:57:04,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715606665] [2022-11-03 01:57:04,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:04,214 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:57:04,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:57:04,215 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:57:04,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (111)] Waiting until timeout for monitored process [2022-11-03 01:57:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:04,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:57:04,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:57:05,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:57:05,763 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:57:05,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715606665] [2022-11-03 01:57:05,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715606665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:05,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:57:05,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:57:05,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400384006] [2022-11-03 01:57:05,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:05,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:57:05,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:57:05,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:57:05,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:57:05,764 INFO L87 Difference]: Start difference. First operand 527 states and 674 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:06,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:06,886 INFO L93 Difference]: Finished difference Result 1475 states and 1976 transitions. [2022-11-03 01:57:06,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:57:06,886 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:57:06,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:06,887 INFO L225 Difference]: With dead ends: 1475 [2022-11-03 01:57:06,887 INFO L226 Difference]: Without dead ends: 1092 [2022-11-03 01:57:06,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:57:06,888 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 2247 mSDsluCounter, 2737 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2247 SdHoareTripleChecker+Valid, 3385 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:06,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2247 Valid, 3385 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 01:57:06,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2022-11-03 01:57:06,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 529. [2022-11-03 01:57:06,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 528 states have (on average 1.2803030303030303) internal successors, (676), 528 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:06,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 676 transitions. [2022-11-03 01:57:06,896 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 676 transitions. Word has length 320 [2022-11-03 01:57:06,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:06,896 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 676 transitions. [2022-11-03 01:57:06,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:06,896 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 676 transitions. [2022-11-03 01:57:06,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:57:06,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:06,897 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:57:06,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (111)] Forceful destruction successful, exit code 0 [2022-11-03 01:57:07,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:57:07,099 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:07,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:07,099 INFO L85 PathProgramCache]: Analyzing trace with hash 292248977, now seen corresponding path program 1 times [2022-11-03 01:57:07,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:57:07,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715641517] [2022-11-03 01:57:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:07,100 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:57:07,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:57:07,101 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:57:07,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (112)] Waiting until timeout for monitored process [2022-11-03 01:57:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:07,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:57:07,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:08,616 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:57:08,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:57:08,616 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:57:08,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715641517] [2022-11-03 01:57:08,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715641517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:08,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:57:08,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:57:08,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396073148] [2022-11-03 01:57:08,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:08,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:57:08,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:57:08,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:57:08,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:57:08,618 INFO L87 Difference]: Start difference. First operand 529 states and 676 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:09,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:09,759 INFO L93 Difference]: Finished difference Result 1483 states and 1984 transitions. [2022-11-03 01:57:09,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:57:09,760 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:57:09,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:09,761 INFO L225 Difference]: With dead ends: 1483 [2022-11-03 01:57:09,761 INFO L226 Difference]: Without dead ends: 1098 [2022-11-03 01:57:09,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:57:09,762 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 2242 mSDsluCounter, 2741 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 3392 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:09,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2242 Valid, 3392 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 01:57:09,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-11-03 01:57:09,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 531. [2022-11-03 01:57:09,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 1.2792452830188679) internal successors, (678), 530 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 01:57:09,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 678 transitions. [2022-11-03 01:57:09,771 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 678 transitions. Word has length 320 [2022-11-03 01:57:09,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:09,772 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 678 transitions. [2022-11-03 01:57:09,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:09,772 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 678 transitions. [2022-11-03 01:57:09,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:57:09,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:09,773 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:57:09,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (112)] Ended with exit code 0 [2022-11-03 01:57:09,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:57:09,973 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:09,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:09,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1393930861, now seen corresponding path program 1 times [2022-11-03 01:57:09,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:57:09,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828565070] [2022-11-03 01:57:09,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:09,975 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:57:09,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:57:09,976 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:57:09,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (113)] Waiting until timeout for monitored process [2022-11-03 01:57:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:10,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:57:10,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:11,517 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:57:11,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:57:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:57:12,235 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:57:12,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828565070] [2022-11-03 01:57:12,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828565070] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:57:12,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [244651275] [2022-11-03 01:57:12,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:12,236 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:57:12,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:57:12,243 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:57:12,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (114)] Waiting until timeout for monitored process [2022-11-03 01:57:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:13,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:57:13,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:13,540 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 01:57:13,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:57:13,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [244651275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:13,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:57:13,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 10] total 19 [2022-11-03 01:57:13,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211551486] [2022-11-03 01:57:13,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:13,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:57:13,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:57:13,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:57:13,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:57:13,543 INFO L87 Difference]: Start difference. First operand 531 states and 678 transitions. Second operand has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:13,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:13,686 INFO L93 Difference]: Finished difference Result 1799 states and 2365 transitions. [2022-11-03 01:57:13,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:57:13,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:57:13,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:13,689 INFO L225 Difference]: With dead ends: 1799 [2022-11-03 01:57:13,689 INFO L226 Difference]: Without dead ends: 1412 [2022-11-03 01:57:13,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 963 GetRequests, 943 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2022-11-03 01:57:13,690 INFO L413 NwaCegarLoop]: 1118 mSDtfsCounter, 1183 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 2344 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:13,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1183 Valid, 2344 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:57:13,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2022-11-03 01:57:13,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 547. [2022-11-03 01:57:13,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 546 states have (on average 1.283882783882784) internal successors, (701), 546 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:13,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 701 transitions. [2022-11-03 01:57:13,705 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 701 transitions. Word has length 320 [2022-11-03 01:57:13,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:13,705 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 701 transitions. [2022-11-03 01:57:13,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:13,706 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 701 transitions. [2022-11-03 01:57:13,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:57:13,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:13,707 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:57:13,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (113)] Ended with exit code 0 [2022-11-03 01:57:13,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (114)] Forceful destruction successful, exit code 0 [2022-11-03 01:57:14,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,114 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:57:14,132 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:14,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:14,132 INFO L85 PathProgramCache]: Analyzing trace with hash -372862507, now seen corresponding path program 1 times [2022-11-03 01:57:14,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:57:14,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914252742] [2022-11-03 01:57:14,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:14,134 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:57:14,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:57:14,135 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:57:14,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (115)] Waiting until timeout for monitored process [2022-11-03 01:57:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:14,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:57:14,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:15,895 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:57:15,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:57:16,556 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:57:16,556 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:57:16,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914252742] [2022-11-03 01:57:16,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914252742] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:57:16,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1500361838] [2022-11-03 01:57:16,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:16,557 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:57:16,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:57:16,558 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:57:16,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (116)] Waiting until timeout for monitored process [2022-11-03 01:57:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:18,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 01:57:18,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 01:57:19,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:57:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 01:57:19,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1500361838] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:57:19,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669300906] [2022-11-03 01:57:19,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:19,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:19,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:57:19,988 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:57:19,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-11-03 01:57:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:20,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 01:57:20,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:21,608 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 58 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:57:21,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:57:23,073 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 58 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:57:23,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669300906] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:57:23,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 01:57:23,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9, 9, 6, 6] total 35 [2022-11-03 01:57:23,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85123648] [2022-11-03 01:57:23,074 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 01:57:23,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-03 01:57:23,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:57:23,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-03 01:57:23,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 01:57:23,077 INFO L87 Difference]: Start difference. First operand 547 states and 701 transitions. Second operand has 35 states, 35 states have (on average 46.74285714285714) internal successors, (1636), 35 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:39,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:39,362 INFO L93 Difference]: Finished difference Result 10472 states and 14064 transitions. [2022-11-03 01:57:39,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-11-03 01:57:39,363 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 46.74285714285714) internal successors, (1636), 35 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:57:39,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:39,370 INFO L225 Difference]: With dead ends: 10472 [2022-11-03 01:57:39,370 INFO L226 Difference]: Without dead ends: 10069 [2022-11-03 01:57:39,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2030 GetRequests, 1885 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7214 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=4402, Invalid=16768, Unknown=0, NotChecked=0, Total=21170 [2022-11-03 01:57:39,373 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 18164 mSDsluCounter, 50121 mSDsCounter, 0 mSdLazyCounter, 7782 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18164 SdHoareTripleChecker+Valid, 51065 SdHoareTripleChecker+Invalid, 12619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 7782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4613 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:39,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18164 Valid, 51065 Invalid, 12619 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [224 Valid, 7782 Invalid, 0 Unknown, 4613 Unchecked, 7.9s Time] [2022-11-03 01:57:39,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10069 states. [2022-11-03 01:57:39,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10069 to 1734. [2022-11-03 01:57:39,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1733 states have (on average 1.3271783035199076) internal successors, (2300), 1733 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:39,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 2300 transitions. [2022-11-03 01:57:39,491 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 2300 transitions. Word has length 320 [2022-11-03 01:57:39,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:39,491 INFO L495 AbstractCegarLoop]: Abstraction has 1734 states and 2300 transitions. [2022-11-03 01:57:39,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 46.74285714285714) internal successors, (1636), 35 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:39,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 2300 transitions. [2022-11-03 01:57:39,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:57:39,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:39,494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:57:39,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (115)] Forceful destruction successful, exit code 0 [2022-11-03 01:57:39,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (116)] Ended with exit code 0 [2022-11-03 01:57:39,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-11-03 01:57:40,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,116 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,117 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:40,107 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:40,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:40,108 INFO L85 PathProgramCache]: Analyzing trace with hash -238075059, now seen corresponding path program 1 times [2022-11-03 01:57:40,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:57:40,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68003315] [2022-11-03 01:57:40,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:40,109 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:57:40,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:57:40,110 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:57:40,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (118)] Waiting until timeout for monitored process [2022-11-03 01:57:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:40,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 01:57:40,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 56 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:57:42,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:57:45,772 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:57:45,772 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:57:45,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68003315] [2022-11-03 01:57:45,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68003315] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:57:45,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [12061054] [2022-11-03 01:57:45,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:45,773 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:57:45,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:57:45,774 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:57:45,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (119)] Waiting until timeout for monitored process [2022-11-03 01:57:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:47,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:57:47,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:47,084 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 01:57:47,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:57:47,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [12061054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:47,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:57:47,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 11] total 20 [2022-11-03 01:57:47,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987360605] [2022-11-03 01:57:47,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:47,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:57:47,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:57:47,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:57:47,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-03 01:57:47,086 INFO L87 Difference]: Start difference. First operand 1734 states and 2300 transitions. Second operand has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:47,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:47,223 INFO L93 Difference]: Finished difference Result 4826 states and 6459 transitions. [2022-11-03 01:57:47,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:57:47,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:57:47,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:47,226 INFO L225 Difference]: With dead ends: 4826 [2022-11-03 01:57:47,227 INFO L226 Difference]: Without dead ends: 3248 [2022-11-03 01:57:47,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 962 GetRequests, 941 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-11-03 01:57:47,229 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 1898 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1898 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:47,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1898 Valid, 1621 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:57:47,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2022-11-03 01:57:47,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 1734. [2022-11-03 01:57:47,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1733 states have (on average 1.324870167339873) internal successors, (2296), 1733 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:47,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 2296 transitions. [2022-11-03 01:57:47,265 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 2296 transitions. Word has length 320 [2022-11-03 01:57:47,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:47,265 INFO L495 AbstractCegarLoop]: Abstraction has 1734 states and 2296 transitions. [2022-11-03 01:57:47,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:47,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 2296 transitions. [2022-11-03 01:57:47,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:57:47,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:47,267 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:57:47,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (118)] Forceful destruction successful, exit code 0 [2022-11-03 01:57:47,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (119)] Ended with exit code 0 [2022-11-03 01:57:47,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,119 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:57:47,668 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:47,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:47,668 INFO L85 PathProgramCache]: Analyzing trace with hash -215442805, now seen corresponding path program 1 times [2022-11-03 01:57:47,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:57:47,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950274470] [2022-11-03 01:57:47,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:47,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:57:47,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:57:47,671 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:57:47,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (120)] Waiting until timeout for monitored process [2022-11-03 01:57:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:48,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 01:57:48,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:50,438 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 56 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:57:50,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:57:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:57:53,423 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:57:53,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950274470] [2022-11-03 01:57:53,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950274470] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:57:53,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [63613935] [2022-11-03 01:57:53,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:53,424 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:57:53,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:57:53,425 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:57:53,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (121)] Waiting until timeout for monitored process [2022-11-03 01:57:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:54,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:57:54,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:54,721 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 01:57:54,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:57:54,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [63613935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:54,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:57:54,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 11] total 20 [2022-11-03 01:57:54,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083999540] [2022-11-03 01:57:54,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:54,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:57:54,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:57:54,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:57:54,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-03 01:57:54,723 INFO L87 Difference]: Start difference. First operand 1734 states and 2296 transitions. Second operand has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:54,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:54,860 INFO L93 Difference]: Finished difference Result 4834 states and 6461 transitions. [2022-11-03 01:57:54,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:57:54,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:57:54,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:54,866 INFO L225 Difference]: With dead ends: 4834 [2022-11-03 01:57:54,866 INFO L226 Difference]: Without dead ends: 3256 [2022-11-03 01:57:54,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 963 GetRequests, 942 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-11-03 01:57:54,868 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 1897 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:54,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1897 Valid, 1620 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:57:54,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2022-11-03 01:57:54,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 1734. [2022-11-03 01:57:54,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1733 states have (on average 1.3225620311598385) internal successors, (2292), 1733 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:54,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 2292 transitions. [2022-11-03 01:57:54,901 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 2292 transitions. Word has length 320 [2022-11-03 01:57:54,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:54,901 INFO L495 AbstractCegarLoop]: Abstraction has 1734 states and 2292 transitions. [2022-11-03 01:57:54,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:54,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 2292 transitions. [2022-11-03 01:57:54,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:57:54,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:54,903 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:57:54,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (121)] Ended with exit code 0 [2022-11-03 01:57:55,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (120)] Ended with exit code 0 [2022-11-03 01:57:55,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,120 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:57:55,305 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:55,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:55,305 INFO L85 PathProgramCache]: Analyzing trace with hash -153403191, now seen corresponding path program 1 times [2022-11-03 01:57:55,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:57:55,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083484372] [2022-11-03 01:57:55,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:55,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:57:55,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:57:55,307 INFO L229 MonitoredProcess]: Starting monitored process 122 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:57:55,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (122)] Waiting until timeout for monitored process [2022-11-03 01:57:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:56,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 01:57:56,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 56 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:57:58,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:01,035 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:01,035 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:58:01,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083484372] [2022-11-03 01:58:01,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083484372] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:58:01,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [627062629] [2022-11-03 01:58:01,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:01,035 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:58:01,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:58:01,036 INFO L229 MonitoredProcess]: Starting monitored process 123 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:58:01,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (123)] Waiting until timeout for monitored process [2022-11-03 01:58:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:02,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:58:02,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:02,323 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 01:58:02,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:58:02,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [627062629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:02,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:58:02,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 11] total 20 [2022-11-03 01:58:02,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70937828] [2022-11-03 01:58:02,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:02,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:58:02,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:58:02,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:58:02,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-03 01:58:02,325 INFO L87 Difference]: Start difference. First operand 1734 states and 2292 transitions. Second operand has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:02,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:02,462 INFO L93 Difference]: Finished difference Result 4838 states and 6457 transitions. [2022-11-03 01:58:02,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:58:02,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:58:02,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:02,465 INFO L225 Difference]: With dead ends: 4838 [2022-11-03 01:58:02,465 INFO L226 Difference]: Without dead ends: 3260 [2022-11-03 01:58:02,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 963 GetRequests, 942 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-11-03 01:58:02,466 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 1895 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:02,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1895 Valid, 1619 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:58:02,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2022-11-03 01:58:02,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 1734. [2022-11-03 01:58:02,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1733 states have (on average 1.3202538949798037) internal successors, (2288), 1733 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 2288 transitions. [2022-11-03 01:58:02,493 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 2288 transitions. Word has length 320 [2022-11-03 01:58:02,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:02,494 INFO L495 AbstractCegarLoop]: Abstraction has 1734 states and 2288 transitions. [2022-11-03 01:58:02,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:02,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 2288 transitions. [2022-11-03 01:58:02,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:58:02,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:02,495 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:02,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (123)] Ended with exit code 0 [2022-11-03 01:58:02,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (122)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:02,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 123 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,122 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:58:02,896 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:02,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:02,896 INFO L85 PathProgramCache]: Analyzing trace with hash -287416697, now seen corresponding path program 1 times [2022-11-03 01:58:02,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:58:02,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097694787] [2022-11-03 01:58:02,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:02,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:58:02,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:58:02,898 INFO L229 MonitoredProcess]: Starting monitored process 124 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:58:02,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (124)] Waiting until timeout for monitored process [2022-11-03 01:58:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:03,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 01:58:03,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:05,857 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 56 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:58:05,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:08,983 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:08,984 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:58:08,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097694787] [2022-11-03 01:58:08,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097694787] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:58:08,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1463067978] [2022-11-03 01:58:08,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:08,984 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:58:08,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:58:08,985 INFO L229 MonitoredProcess]: Starting monitored process 125 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:58:08,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (125)] Waiting until timeout for monitored process [2022-11-03 01:58:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:10,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:58:10,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:10,292 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 01:58:10,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:58:10,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1463067978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:10,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:58:10,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 11] total 20 [2022-11-03 01:58:10,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347171274] [2022-11-03 01:58:10,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:10,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:58:10,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:58:10,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:58:10,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-03 01:58:10,294 INFO L87 Difference]: Start difference. First operand 1734 states and 2288 transitions. Second operand has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:10,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:10,434 INFO L93 Difference]: Finished difference Result 4850 states and 6465 transitions. [2022-11-03 01:58:10,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:58:10,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:58:10,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:10,438 INFO L225 Difference]: With dead ends: 4850 [2022-11-03 01:58:10,438 INFO L226 Difference]: Without dead ends: 3272 [2022-11-03 01:58:10,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 963 GetRequests, 942 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-11-03 01:58:10,439 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 1895 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:10,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1895 Valid, 1618 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:58:10,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2022-11-03 01:58:10,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 1734. [2022-11-03 01:58:10,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1733 states have (on average 1.3179457587997692) internal successors, (2284), 1733 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:10,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 2284 transitions. [2022-11-03 01:58:10,467 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 2284 transitions. Word has length 320 [2022-11-03 01:58:10,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:10,467 INFO L495 AbstractCegarLoop]: Abstraction has 1734 states and 2284 transitions. [2022-11-03 01:58:10,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:10,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 2284 transitions. [2022-11-03 01:58:10,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:58:10,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:10,469 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:10,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (124)] Ended with exit code 0 [2022-11-03 01:58:10,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (125)] Ended with exit code 0 [2022-11-03 01:58:10,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,125 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:58:10,870 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:10,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:10,870 INFO L85 PathProgramCache]: Analyzing trace with hash 2013405893, now seen corresponding path program 1 times [2022-11-03 01:58:10,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:58:10,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259790703] [2022-11-03 01:58:10,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:10,871 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:58:10,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:58:10,872 INFO L229 MonitoredProcess]: Starting monitored process 126 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:58:10,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (126)] Waiting until timeout for monitored process [2022-11-03 01:58:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:11,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 01:58:11,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 56 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:58:13,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:16,941 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:16,941 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:58:16,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259790703] [2022-11-03 01:58:16,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259790703] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:58:16,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [792749024] [2022-11-03 01:58:16,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:16,942 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:58:16,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:58:16,943 INFO L229 MonitoredProcess]: Starting monitored process 127 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:58:16,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (127)] Waiting until timeout for monitored process [2022-11-03 01:58:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:18,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:58:18,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:18,251 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 01:58:18,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:58:18,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [792749024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:18,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:58:18,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 11] total 20 [2022-11-03 01:58:18,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885403015] [2022-11-03 01:58:18,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:18,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:58:18,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:58:18,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:58:18,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-03 01:58:18,252 INFO L87 Difference]: Start difference. First operand 1734 states and 2284 transitions. Second operand has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:18,392 INFO L93 Difference]: Finished difference Result 4862 states and 6473 transitions. [2022-11-03 01:58:18,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:58:18,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:58:18,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:18,396 INFO L225 Difference]: With dead ends: 4862 [2022-11-03 01:58:18,396 INFO L226 Difference]: Without dead ends: 3284 [2022-11-03 01:58:18,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 963 GetRequests, 942 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-11-03 01:58:18,397 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 1894 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:18,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 1619 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:58:18,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2022-11-03 01:58:18,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 1742. [2022-11-03 01:58:18,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1742 states, 1741 states have (on average 1.3164847788627225) internal successors, (2292), 1741 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:18,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1742 states to 1742 states and 2292 transitions. [2022-11-03 01:58:18,424 INFO L78 Accepts]: Start accepts. Automaton has 1742 states and 2292 transitions. Word has length 320 [2022-11-03 01:58:18,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:18,424 INFO L495 AbstractCegarLoop]: Abstraction has 1742 states and 2292 transitions. [2022-11-03 01:58:18,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:18,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1742 states and 2292 transitions. [2022-11-03 01:58:18,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:58:18,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:18,426 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:18,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (127)] Ended with exit code 0 [2022-11-03 01:58:18,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (126)] Ended with exit code 0 [2022-11-03 01:58:18,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,126 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:58:18,827 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:18,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:18,827 INFO L85 PathProgramCache]: Analyzing trace with hash -2023395965, now seen corresponding path program 1 times [2022-11-03 01:58:18,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:58:18,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714652228] [2022-11-03 01:58:18,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:18,829 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:58:18,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:58:18,830 INFO L229 MonitoredProcess]: Starting monitored process 128 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:58:18,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (128)] Waiting until timeout for monitored process [2022-11-03 01:58:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:19,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 01:58:19,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:21,729 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 56 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:58:21,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:24,894 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:24,894 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:58:24,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714652228] [2022-11-03 01:58:24,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714652228] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:58:24,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1840795179] [2022-11-03 01:58:24,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:24,895 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:58:24,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:58:24,898 INFO L229 MonitoredProcess]: Starting monitored process 129 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:58:24,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (129)] Waiting until timeout for monitored process [2022-11-03 01:58:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:26,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:58:26,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:26,197 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 01:58:26,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:58:26,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1840795179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:26,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:58:26,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 11] total 20 [2022-11-03 01:58:26,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790614969] [2022-11-03 01:58:26,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:26,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:58:26,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:58:26,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:58:26,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-03 01:58:26,199 INFO L87 Difference]: Start difference. First operand 1742 states and 2292 transitions. Second operand has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:26,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:26,337 INFO L93 Difference]: Finished difference Result 4874 states and 6481 transitions. [2022-11-03 01:58:26,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:58:26,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:58:26,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:26,341 INFO L225 Difference]: With dead ends: 4874 [2022-11-03 01:58:26,342 INFO L226 Difference]: Without dead ends: 3288 [2022-11-03 01:58:26,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 963 GetRequests, 942 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-11-03 01:58:26,344 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 1892 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:26,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1892 Valid, 1618 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:58:26,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3288 states. [2022-11-03 01:58:26,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3288 to 1746. [2022-11-03 01:58:26,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1746 states, 1745 states have (on average 1.3146131805157593) internal successors, (2294), 1745 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:26,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 2294 transitions. [2022-11-03 01:58:26,393 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 2294 transitions. Word has length 320 [2022-11-03 01:58:26,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:26,394 INFO L495 AbstractCegarLoop]: Abstraction has 1746 states and 2294 transitions. [2022-11-03 01:58:26,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:26,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 2294 transitions. [2022-11-03 01:58:26,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:58:26,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:26,397 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:26,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (128)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:26,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (129)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:26,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,129 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:58:26,798 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:26,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:26,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1878544321, now seen corresponding path program 1 times [2022-11-03 01:58:26,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:58:26,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459182390] [2022-11-03 01:58:26,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:26,799 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:58:26,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:58:26,800 INFO L229 MonitoredProcess]: Starting monitored process 130 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:58:26,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (130)] Waiting until timeout for monitored process [2022-11-03 01:58:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:27,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 01:58:27,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:29,469 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 56 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:58:29,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:32,486 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:32,486 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:58:32,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459182390] [2022-11-03 01:58:32,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459182390] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:58:32,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1978578791] [2022-11-03 01:58:32,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:32,487 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:58:32,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:58:32,488 INFO L229 MonitoredProcess]: Starting monitored process 131 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:58:32,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (131)] Waiting until timeout for monitored process [2022-11-03 01:58:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:34,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 01:58:34,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:35,096 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 01:58:35,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:35,984 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 01:58:35,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1978578791] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:58:35,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153863225] [2022-11-03 01:58:35,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:35,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:35,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:35,985 INFO L229 MonitoredProcess]: Starting monitored process 132 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:35,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-11-03 01:58:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:36,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 01:58:36,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:37,753 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 52 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:58:37,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:39,136 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 52 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:58:39,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153863225] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:58:39,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 01:58:39,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10, 10, 7, 7] total 39 [2022-11-03 01:58:39,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380454491] [2022-11-03 01:58:39,137 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 01:58:39,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-03 01:58:39,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:58:39,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-03 01:58:39,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1388, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 01:58:39,139 INFO L87 Difference]: Start difference. First operand 1746 states and 2294 transitions. Second operand has 39 states, 39 states have (on average 42.256410256410255) internal successors, (1648), 39 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:59:07,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:07,099 INFO L93 Difference]: Finished difference Result 17424 states and 23168 transitions. [2022-11-03 01:59:07,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-11-03 01:59:07,100 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 42.256410256410255) internal successors, (1648), 39 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:59:07,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:07,111 INFO L225 Difference]: With dead ends: 17424 [2022-11-03 01:59:07,111 INFO L226 Difference]: Without dead ends: 15834 [2022-11-03 01:59:07,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2114 GetRequests, 1888 SyntacticMatches, 1 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20467 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=10025, Invalid=41277, Unknown=0, NotChecked=0, Total=51302 [2022-11-03 01:59:07,119 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 21465 mSDsluCounter, 32716 mSDsCounter, 0 mSdLazyCounter, 4972 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21465 SdHoareTripleChecker+Valid, 33466 SdHoareTripleChecker+Invalid, 10003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 4972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4723 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:07,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21465 Valid, 33466 Invalid, 10003 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [308 Valid, 4972 Invalid, 0 Unknown, 4723 Unchecked, 6.8s Time] [2022-11-03 01:59:07,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15834 states. [2022-11-03 01:59:07,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15834 to 1750. [2022-11-03 01:59:07,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1750 states, 1749 states have (on average 1.3104631217838765) internal successors, (2292), 1749 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:59:07,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2292 transitions. [2022-11-03 01:59:07,207 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2292 transitions. Word has length 320 [2022-11-03 01:59:07,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:07,207 INFO L495 AbstractCegarLoop]: Abstraction has 1750 states and 2292 transitions. [2022-11-03 01:59:07,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 42.256410256410255) internal successors, (1648), 39 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:59:07,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2292 transitions. [2022-11-03 01:59:07,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:59:07,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:07,210 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:07,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (130)] Forceful destruction successful, exit code 0 [2022-11-03 01:59:07,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (131)] Ended with exit code 0 [2022-11-03 01:59:07,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2022-11-03 01:59:07,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,131 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,132 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:07,832 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:07,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:07,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1616147973, now seen corresponding path program 1 times [2022-11-03 01:59:07,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:59:07,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908448322] [2022-11-03 01:59:07,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:07,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:59:07,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:59:07,835 INFO L229 MonitoredProcess]: Starting monitored process 133 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:59:07,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (133)] Waiting until timeout for monitored process [2022-11-03 01:59:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:08,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:59:08,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:09,455 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 54 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:59:09,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:59:10,056 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 54 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:59:10,056 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:59:10,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908448322] [2022-11-03 01:59:10,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908448322] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:59:10,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1420159800] [2022-11-03 01:59:10,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:10,057 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:59:10,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:59:10,058 INFO L229 MonitoredProcess]: Starting monitored process 134 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:59:10,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (134)] Waiting until timeout for monitored process [2022-11-03 01:59:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:11,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:59:11,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:11,347 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 01:59:11,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:59:11,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1420159800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:11,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:59:11,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 11] total 20 [2022-11-03 01:59:11,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292404620] [2022-11-03 01:59:11,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:11,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:59:11,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:59:11,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:59:11,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-03 01:59:11,348 INFO L87 Difference]: Start difference. First operand 1750 states and 2292 transitions. Second operand has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:59:11,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:11,474 INFO L93 Difference]: Finished difference Result 4982 states and 6593 transitions. [2022-11-03 01:59:11,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:59:11,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:59:11,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:11,478 INFO L225 Difference]: With dead ends: 4982 [2022-11-03 01:59:11,478 INFO L226 Difference]: Without dead ends: 3388 [2022-11-03 01:59:11,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 963 GetRequests, 942 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-11-03 01:59:11,479 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 1870 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:11,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1870 Valid, 1656 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:59:11,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3388 states. [2022-11-03 01:59:11,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3388 to 1774. [2022-11-03 01:59:11,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1773 states have (on average 1.3073886068809926) internal successors, (2318), 1773 states have internal predecessors, (2318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:59:11,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2318 transitions. [2022-11-03 01:59:11,514 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2318 transitions. Word has length 320 [2022-11-03 01:59:11,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:11,514 INFO L495 AbstractCegarLoop]: Abstraction has 1774 states and 2318 transitions. [2022-11-03 01:59:11,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:59:11,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2318 transitions. [2022-11-03 01:59:11,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:59:11,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:11,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:11,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (133)] Ended with exit code 0 [2022-11-03 01:59:11,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (134)] Forceful destruction successful, exit code 0 [2022-11-03 01:59:11,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,134 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:59:11,916 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:11,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:11,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1397293255, now seen corresponding path program 1 times [2022-11-03 01:59:11,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:59:11,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35303891] [2022-11-03 01:59:11,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:11,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:59:11,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:59:11,919 INFO L229 MonitoredProcess]: Starting monitored process 135 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:59:11,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (135)] Waiting until timeout for monitored process [2022-11-03 01:59:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:12,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:59:12,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:13,568 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 54 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:59:13,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:59:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 54 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:59:14,183 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:59:14,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35303891] [2022-11-03 01:59:14,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35303891] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:59:14,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1743926854] [2022-11-03 01:59:14,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:14,183 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:59:14,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:59:14,186 INFO L229 MonitoredProcess]: Starting monitored process 136 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:59:14,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (136)] Waiting until timeout for monitored process [2022-11-03 01:59:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:15,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:59:15,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 01:59:15,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:59:15,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1743926854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:15,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:59:15,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 11] total 20 [2022-11-03 01:59:15,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677647358] [2022-11-03 01:59:15,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:15,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:59:15,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:59:15,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:59:15,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-03 01:59:15,492 INFO L87 Difference]: Start difference. First operand 1774 states and 2318 transitions. Second operand has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:59:15,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:15,617 INFO L93 Difference]: Finished difference Result 5038 states and 6653 transitions. [2022-11-03 01:59:15,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:59:15,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:59:15,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:15,620 INFO L225 Difference]: With dead ends: 5038 [2022-11-03 01:59:15,620 INFO L226 Difference]: Without dead ends: 3420 [2022-11-03 01:59:15,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 963 GetRequests, 942 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-11-03 01:59:15,621 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1872 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:15,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 1654 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:59:15,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3420 states. [2022-11-03 01:59:15,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3420 to 1806. [2022-11-03 01:59:15,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1805 states have (on average 1.305263157894737) internal successors, (2356), 1805 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:59:15,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2356 transitions. [2022-11-03 01:59:15,650 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2356 transitions. Word has length 320 [2022-11-03 01:59:15,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:15,650 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2356 transitions. [2022-11-03 01:59:15,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:59:15,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2356 transitions. [2022-11-03 01:59:15,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:59:15,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:15,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:15,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (136)] Ended with exit code 0 [2022-11-03 01:59:15,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (135)] Forceful destruction successful, exit code 0 [2022-11-03 01:59:16,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,135 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:59:16,052 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:16,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:16,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1886556791, now seen corresponding path program 1 times [2022-11-03 01:59:16,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:59:16,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894713168] [2022-11-03 01:59:16,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:16,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:59:16,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:59:16,055 INFO L229 MonitoredProcess]: Starting monitored process 137 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:59:16,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (137)] Waiting until timeout for monitored process [2022-11-03 01:59:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:16,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:59:16,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 54 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:59:17,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:59:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 54 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:59:18,375 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:59:18,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894713168] [2022-11-03 01:59:18,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894713168] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:59:18,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1702760987] [2022-11-03 01:59:18,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:18,375 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:59:18,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:59:18,376 INFO L229 MonitoredProcess]: Starting monitored process 138 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:59:18,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (138)] Waiting until timeout for monitored process [2022-11-03 01:59:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:19,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:59:19,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:19,708 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 01:59:19,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:59:19,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1702760987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:19,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:59:19,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 11] total 20 [2022-11-03 01:59:19,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59000911] [2022-11-03 01:59:19,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:19,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:59:19,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:59:19,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:59:19,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-03 01:59:19,710 INFO L87 Difference]: Start difference. First operand 1806 states and 2356 transitions. Second operand has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:59:19,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:19,836 INFO L93 Difference]: Finished difference Result 5094 states and 6715 transitions. [2022-11-03 01:59:19,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:59:19,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:59:19,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:19,839 INFO L225 Difference]: With dead ends: 5094 [2022-11-03 01:59:19,839 INFO L226 Difference]: Without dead ends: 3444 [2022-11-03 01:59:19,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 963 GetRequests, 942 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-11-03 01:59:19,841 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 1874 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1874 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:19,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1874 Valid, 1651 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:59:19,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3444 states. [2022-11-03 01:59:19,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3444 to 1826. [2022-11-03 01:59:19,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1826 states, 1825 states have (on average 1.303013698630137) internal successors, (2378), 1825 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:59:19,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 2378 transitions. [2022-11-03 01:59:19,872 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 2378 transitions. Word has length 320 [2022-11-03 01:59:19,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:19,873 INFO L495 AbstractCegarLoop]: Abstraction has 1826 states and 2378 transitions. [2022-11-03 01:59:19,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:59:19,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 2378 transitions. [2022-11-03 01:59:19,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:59:19,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:19,874 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:19,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (137)] Ended with exit code 0 [2022-11-03 01:59:20,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (138)] Ended with exit code 0 [2022-11-03 01:59:20,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,138 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:59:20,275 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:20,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:20,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1077210165, now seen corresponding path program 1 times [2022-11-03 01:59:20,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:59:20,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943144426] [2022-11-03 01:59:20,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:20,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:59:20,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:59:20,277 INFO L229 MonitoredProcess]: Starting monitored process 139 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:59:20,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (139)] Waiting until timeout for monitored process [2022-11-03 01:59:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:21,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:59:21,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 54 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:59:22,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:59:22,707 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 54 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:59:22,707 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:59:22,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943144426] [2022-11-03 01:59:22,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943144426] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:59:22,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [128166151] [2022-11-03 01:59:22,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:22,708 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:59:22,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:59:22,709 INFO L229 MonitoredProcess]: Starting monitored process 140 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:59:22,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (140)] Waiting until timeout for monitored process [2022-11-03 01:59:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:24,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 01:59:24,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:25,336 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 01:59:25,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:59:26,159 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 01:59:26,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [128166151] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:59:26,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459882103] [2022-11-03 01:59:26,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:26,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:26,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:59:26,160 INFO L229 MonitoredProcess]: Starting monitored process 141 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:59:26,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-11-03 01:59:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:26,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 01:59:26,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:27,956 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 44 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:59:27,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:59:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 44 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:59:29,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459882103] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:59:29,289 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 01:59:29,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10, 10, 8, 8] total 41 [2022-11-03 01:59:29,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099544591] [2022-11-03 01:59:29,289 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 01:59:29,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-03 01:59:29,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:59:29,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-03 01:59:29,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1537, Unknown=0, NotChecked=0, Total=1640 [2022-11-03 01:59:29,291 INFO L87 Difference]: Start difference. First operand 1826 states and 2378 transitions. Second operand has 41 states, 41 states have (on average 40.65853658536585) internal successors, (1667), 41 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:59:59,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:59,537 INFO L93 Difference]: Finished difference Result 16588 states and 21830 transitions. [2022-11-03 01:59:59,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2022-11-03 01:59:59,539 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 40.65853658536585) internal successors, (1667), 41 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 01:59:59,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:59,545 INFO L225 Difference]: With dead ends: 16588 [2022-11-03 01:59:59,545 INFO L226 Difference]: Without dead ends: 14918 [2022-11-03 01:59:59,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2153 GetRequests, 1881 SyntacticMatches, 1 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29224 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=11408, Invalid=62848, Unknown=0, NotChecked=0, Total=74256 [2022-11-03 01:59:59,550 INFO L413 NwaCegarLoop]: 3466 mSDtfsCounter, 29506 mSDsluCounter, 83091 mSDsCounter, 0 mSdLazyCounter, 9392 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29506 SdHoareTripleChecker+Valid, 86557 SdHoareTripleChecker+Invalid, 17060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 9392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7126 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:59,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29506 Valid, 86557 Invalid, 17060 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [542 Valid, 9392 Invalid, 0 Unknown, 7126 Unchecked, 10.1s Time] [2022-11-03 01:59:59,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14918 states. [2022-11-03 01:59:59,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14918 to 1842. [2022-11-03 01:59:59,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3003802281368821) internal successors, (2394), 1841 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:59:59,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2394 transitions. [2022-11-03 01:59:59,638 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2394 transitions. Word has length 320 [2022-11-03 01:59:59,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:59,639 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2394 transitions. [2022-11-03 01:59:59,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 40.65853658536585) internal successors, (1667), 41 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:59:59,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2394 transitions. [2022-11-03 01:59:59,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 01:59:59,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:59,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:59,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (139)] Ended with exit code 0 [2022-11-03 01:59:59,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2022-11-03 02:00:00,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (140)] Ended with exit code 0 [2022-11-03 02:00:00,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,141 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,140 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:00:00,241 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:00,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:00,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2066458129, now seen corresponding path program 1 times [2022-11-03 02:00:00,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:00:00,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822185006] [2022-11-03 02:00:00,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:00,243 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:00:00,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:00:00,244 INFO L229 MonitoredProcess]: Starting monitored process 142 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:00:00,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (142)] Waiting until timeout for monitored process [2022-11-03 02:00:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:00,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 02:00:00,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:03,052 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 50 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:00:03,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:00:06,352 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 50 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:00:06,352 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:00:06,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822185006] [2022-11-03 02:00:06,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822185006] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:00:06,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1989557189] [2022-11-03 02:00:06,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:06,352 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:00:06,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:00:06,353 INFO L229 MonitoredProcess]: Starting monitored process 143 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:00:06,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (143)] Waiting until timeout for monitored process [2022-11-03 02:00:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:07,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:00:07,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:07,654 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 02:00:07,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:00:07,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1989557189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:07,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:00:07,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 11] total 20 [2022-11-03 02:00:07,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330932388] [2022-11-03 02:00:07,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:07,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:00:07,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:00:07,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:00:07,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-03 02:00:07,656 INFO L87 Difference]: Start difference. First operand 1842 states and 2394 transitions. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:00:07,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:07,828 INFO L93 Difference]: Finished difference Result 5342 states and 7007 transitions. [2022-11-03 02:00:07,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:00:07,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 02:00:07,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:07,831 INFO L225 Difference]: With dead ends: 5342 [2022-11-03 02:00:07,831 INFO L226 Difference]: Without dead ends: 3656 [2022-11-03 02:00:07,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 963 GetRequests, 942 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-11-03 02:00:07,832 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 1829 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:07,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1829 Valid, 1685 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:00:07,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3656 states. [2022-11-03 02:00:07,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3656 to 1934. [2022-11-03 02:00:07,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1933 states have (on average 1.2964304190377651) internal successors, (2506), 1933 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:00:07,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 2506 transitions. [2022-11-03 02:00:07,870 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 2506 transitions. Word has length 320 [2022-11-03 02:00:07,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:07,871 INFO L495 AbstractCegarLoop]: Abstraction has 1934 states and 2506 transitions. [2022-11-03 02:00:07,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:00:07,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 2506 transitions. [2022-11-03 02:00:07,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 02:00:07,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:07,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:00:07,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (143)] Forceful destruction successful, exit code 0 [2022-11-03 02:00:08,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (142)] Ended with exit code 0 [2022-11-03 02:00:08,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,142 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:00:08,273 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:08,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:08,274 INFO L85 PathProgramCache]: Analyzing trace with hash -2009199827, now seen corresponding path program 1 times [2022-11-03 02:00:08,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:00:08,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472427203] [2022-11-03 02:00:08,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:08,275 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:00:08,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:00:08,276 INFO L229 MonitoredProcess]: Starting monitored process 144 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:00:08,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (144)] Waiting until timeout for monitored process [2022-11-03 02:00:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:09,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 02:00:09,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 50 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:00:11,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:00:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 50 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:00:14,399 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:00:14,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472427203] [2022-11-03 02:00:14,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1472427203] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:00:14,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [60862049] [2022-11-03 02:00:14,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:14,400 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:00:14,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:00:14,400 INFO L229 MonitoredProcess]: Starting monitored process 145 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:00:14,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (145)] Waiting until timeout for monitored process [2022-11-03 02:00:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:15,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:00:15,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:17,045 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 29 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 02:00:17,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:00:17,966 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 29 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 02:00:17,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [60862049] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:00:17,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599007027] [2022-11-03 02:00:17,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:17,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:00:17,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:00:17,967 INFO L229 MonitoredProcess]: Starting monitored process 146 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:00:17,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-11-03 02:00:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:18,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:00:18,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:19,690 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-03 02:00:19,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:00:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-03 02:00:21,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599007027] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:00:21,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:00:21,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10, 10, 6, 6] total 38 [2022-11-03 02:00:21,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718795959] [2022-11-03 02:00:21,151 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:00:21,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-03 02:00:21,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:00:21,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-03 02:00:21,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1314, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 02:00:21,152 INFO L87 Difference]: Start difference. First operand 1934 states and 2506 transitions. Second operand has 38 states, 38 states have (on average 43.6578947368421) internal successors, (1659), 38 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:09,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:09,592 INFO L93 Difference]: Finished difference Result 40529 states and 53098 transitions. [2022-11-03 02:02:09,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 480 states. [2022-11-03 02:02:09,592 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 43.6578947368421) internal successors, (1659), 38 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 02:02:09,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:09,616 INFO L225 Difference]: With dead ends: 40529 [2022-11-03 02:02:09,616 INFO L226 Difference]: Without dead ends: 38751 [2022-11-03 02:02:09,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2423 GetRequests, 1883 SyntacticMatches, 27 SemanticMatches, 513 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123597 ImplicationChecksByTransitivity, 59.6s TimeCoverageRelationStatistics Valid=26771, Invalid=237939, Unknown=0, NotChecked=0, Total=264710 [2022-11-03 02:02:09,634 INFO L413 NwaCegarLoop]: 6019 mSDtfsCounter, 28279 mSDsluCounter, 188250 mSDsCounter, 0 mSdLazyCounter, 38366 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28279 SdHoareTripleChecker+Valid, 194269 SdHoareTripleChecker+Invalid, 52657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 38366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13855 IncrementalHoareTripleChecker+Unchecked, 41.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:09,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28279 Valid, 194269 Invalid, 52657 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [436 Valid, 38366 Invalid, 0 Unknown, 13855 Unchecked, 41.8s Time] [2022-11-03 02:02:09,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38751 states. [2022-11-03 02:02:09,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38751 to 3508. [2022-11-03 02:02:09,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3508 states, 3507 states have (on average 1.3033932135728543) internal successors, (4571), 3507 states have internal predecessors, (4571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:09,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3508 states to 3508 states and 4571 transitions. [2022-11-03 02:02:09,822 INFO L78 Accepts]: Start accepts. Automaton has 3508 states and 4571 transitions. Word has length 320 [2022-11-03 02:02:09,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:09,822 INFO L495 AbstractCegarLoop]: Abstraction has 3508 states and 4571 transitions. [2022-11-03 02:02:09,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 43.6578947368421) internal successors, (1659), 38 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:09,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3508 states and 4571 transitions. [2022-11-03 02:02:09,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 02:02:09,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:09,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:09,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (144)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:10,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (145)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:10,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:10,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,145 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,146 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:02:10,425 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:10,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:10,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1594461019, now seen corresponding path program 1 times [2022-11-03 02:02:10,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:10,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [969682002] [2022-11-03 02:02:10,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:10,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:10,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:10,429 INFO L229 MonitoredProcess]: Starting monitored process 147 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:10,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (147)] Waiting until timeout for monitored process [2022-11-03 02:02:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:11,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-03 02:02:11,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:17,271 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 48 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:02:17,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:02:37,958 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 48 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:37,959 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:37,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [969682002] [2022-11-03 02:02:37,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [969682002] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:02:37,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [393538144] [2022-11-03 02:02:37,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:37,959 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:02:37,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:02:37,960 INFO L229 MonitoredProcess]: Starting monitored process 148 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:02:37,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (148)] Waiting until timeout for monitored process [2022-11-03 02:02:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:39,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:02:39,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:41,740 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 42 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:02:41,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:02:43,803 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 42 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:43,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [393538144] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:02:43,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827590277] [2022-11-03 02:02:43,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:43,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:02:43,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:02:43,806 INFO L229 MonitoredProcess]: Starting monitored process 149 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:02:43,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-11-03 02:02:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:44,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-03 02:02:44,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:45,798 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:45,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:02:47,514 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 33 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:47,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827590277] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:02:47,514 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:02:47,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11, 12, 10, 10] total 50 [2022-11-03 02:02:47,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735510142] [2022-11-03 02:02:47,515 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:02:47,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-03 02:02:47,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:47,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-03 02:02:47,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2301, Unknown=0, NotChecked=0, Total=2450 [2022-11-03 02:02:47,517 INFO L87 Difference]: Start difference. First operand 3508 states and 4571 transitions. Second operand has 50 states, 50 states have (on average 33.68) internal successors, (1684), 50 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:05:06,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:05:06,212 INFO L93 Difference]: Finished difference Result 162305 states and 212875 transitions. [2022-11-03 02:05:06,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 599 states. [2022-11-03 02:05:06,213 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 33.68) internal successors, (1684), 50 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 02:05:06,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:05:06,316 INFO L225 Difference]: With dead ends: 162305 [2022-11-03 02:05:06,316 INFO L226 Difference]: Without dead ends: 158889 [2022-11-03 02:05:06,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2777 GetRequests, 2136 SyntacticMatches, 4 SemanticMatches, 637 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173963 ImplicationChecksByTransitivity, 94.3s TimeCoverageRelationStatistics Valid=37819, Invalid=369863, Unknown=0, NotChecked=0, Total=407682 [2022-11-03 02:05:06,512 INFO L413 NwaCegarLoop]: 8338 mSDtfsCounter, 49183 mSDsluCounter, 237334 mSDsCounter, 0 mSdLazyCounter, 17837 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49183 SdHoareTripleChecker+Valid, 245672 SdHoareTripleChecker+Invalid, 70863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 17837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52858 IncrementalHoareTripleChecker+Unchecked, 24.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:05:06,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49183 Valid, 245672 Invalid, 70863 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [168 Valid, 17837 Invalid, 0 Unknown, 52858 Unchecked, 24.6s Time] [2022-11-03 02:05:06,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158889 states. [2022-11-03 02:05:07,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158889 to 9789. [2022-11-03 02:05:07,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9789 states, 9788 states have (on average 1.3025132815692686) internal successors, (12749), 9788 states have internal predecessors, (12749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:05:07,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9789 states to 9789 states and 12749 transitions. [2022-11-03 02:05:07,239 INFO L78 Accepts]: Start accepts. Automaton has 9789 states and 12749 transitions. Word has length 320 [2022-11-03 02:05:07,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:05:07,239 INFO L495 AbstractCegarLoop]: Abstraction has 9789 states and 12749 transitions. [2022-11-03 02:05:07,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 33.68) internal successors, (1684), 50 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:05:07,240 INFO L276 IsEmpty]: Start isEmpty. Operand 9789 states and 12749 transitions. [2022-11-03 02:05:07,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 02:05:07,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:05:07,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:05:07,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (148)] Ended with exit code 0 [2022-11-03 02:05:07,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (147)] Ended with exit code 0 [2022-11-03 02:05:07,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Ended with exit code 0 [2022-11-03 02:05:07,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,147 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,149 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:05:07,855 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:05:07,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:05:07,855 INFO L85 PathProgramCache]: Analyzing trace with hash 170038177, now seen corresponding path program 1 times [2022-11-03 02:05:07,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:05:07,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057858480] [2022-11-03 02:05:07,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:07,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:05:07,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:05:07,858 INFO L229 MonitoredProcess]: Starting monitored process 150 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:05:07,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (150)] Waiting until timeout for monitored process [2022-11-03 02:05:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:05:08,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 02:05:08,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:05:10,716 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-03 02:05:10,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:05:14,276 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:05:14,277 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:05:14,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057858480] [2022-11-03 02:05:14,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057858480] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:05:14,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1827466888] [2022-11-03 02:05:14,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:14,277 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:05:14,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:05:14,278 INFO L229 MonitoredProcess]: Starting monitored process 151 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:05:14,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (151)] Waiting until timeout for monitored process [2022-11-03 02:05:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:05:15,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:05:15,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:05:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-03 02:05:17,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:05:19,255 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:05:19,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1827466888] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:05:19,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797894030] [2022-11-03 02:05:19,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:19,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:05:19,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:05:19,256 INFO L229 MonitoredProcess]: Starting monitored process 152 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:05:19,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2022-11-03 02:05:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:05:19,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-03 02:05:19,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:05:21,710 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:05:21,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:05:23,304 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:05:23,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797894030] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:05:23,304 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:05:23,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11, 12, 12, 12] total 42 [2022-11-03 02:05:23,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984997161] [2022-11-03 02:05:23,305 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:05:23,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-03 02:05:23,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:05:23,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-03 02:05:23,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1566, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 02:05:23,308 INFO L87 Difference]: Start difference. First operand 9789 states and 12749 transitions. Second operand has 42 states, 42 states have (on average 29.928571428571427) internal successors, (1257), 42 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:05:27,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:05:27,108 INFO L93 Difference]: Finished difference Result 29793 states and 38887 transitions. [2022-11-03 02:05:27,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 02:05:27,109 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 29.928571428571427) internal successors, (1257), 42 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 02:05:27,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:05:27,121 INFO L225 Difference]: With dead ends: 29793 [2022-11-03 02:05:27,121 INFO L226 Difference]: Without dead ends: 20973 [2022-11-03 02:05:27,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1941 GetRequests, 1875 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=783, Invalid=3773, Unknown=0, NotChecked=0, Total=4556 [2022-11-03 02:05:27,128 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 10902 mSDsluCounter, 11235 mSDsCounter, 0 mSdLazyCounter, 1905 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10902 SdHoareTripleChecker+Valid, 11708 SdHoareTripleChecker+Invalid, 2465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 465 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:05:27,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10902 Valid, 11708 Invalid, 2465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1905 Invalid, 0 Unknown, 465 Unchecked, 2.3s Time] [2022-11-03 02:05:27,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20973 states. [2022-11-03 02:05:27,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20973 to 9789. [2022-11-03 02:05:27,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9789 states, 9788 states have (on average 1.3013894564773192) internal successors, (12738), 9788 states have internal predecessors, (12738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:05:27,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9789 states to 9789 states and 12738 transitions. [2022-11-03 02:05:27,434 INFO L78 Accepts]: Start accepts. Automaton has 9789 states and 12738 transitions. Word has length 320 [2022-11-03 02:05:27,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:05:27,435 INFO L495 AbstractCegarLoop]: Abstraction has 9789 states and 12738 transitions. [2022-11-03 02:05:27,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 29.928571428571427) internal successors, (1257), 42 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:05:27,435 INFO L276 IsEmpty]: Start isEmpty. Operand 9789 states and 12738 transitions. [2022-11-03 02:05:27,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 02:05:27,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:05:27,438 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:05:27,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (151)] Ended with exit code 0 [2022-11-03 02:05:27,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (150)] Forceful destruction successful, exit code 0 [2022-11-03 02:05:27,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Forceful destruction successful, exit code 0 [2022-11-03 02:05:28,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,150 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,152 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:05:28,039 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:05:28,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:05:28,039 INFO L85 PathProgramCache]: Analyzing trace with hash -859321121, now seen corresponding path program 1 times [2022-11-03 02:05:28,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:05:28,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887410871] [2022-11-03 02:05:28,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:28,041 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:05:28,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:05:28,042 INFO L229 MonitoredProcess]: Starting monitored process 153 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:05:28,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (153)] Waiting until timeout for monitored process [2022-11-03 02:05:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:05:28,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-03 02:05:28,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:05:34,861 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:05:34,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:05:45,667 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:05:45,668 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:05:45,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887410871] [2022-11-03 02:05:45,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887410871] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:05:45,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1668749018] [2022-11-03 02:05:45,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:45,668 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:05:45,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:05:45,669 INFO L229 MonitoredProcess]: Starting monitored process 154 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:05:45,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (154)] Waiting until timeout for monitored process [2022-11-03 02:05:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:05:47,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:05:47,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:05:49,995 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 02:05:49,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:05:52,355 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:05:52,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1668749018] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:05:52,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371227408] [2022-11-03 02:05:52,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:52,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:05:52,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:05:52,363 INFO L229 MonitoredProcess]: Starting monitored process 155 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:05:52,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b9bca5-c2e1-4277-9908-9de1a218cfea/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2022-11-03 02:05:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:05:53,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-03 02:05:53,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:05:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:05:56,104 INFO L328 TraceCheckSpWp]: Computing backward predicates...